"Ian" <I**@discussions.microsoft.com> wrote in message
news:20DB9158-BC55-4F43-BBF3-2B2A6E2C7FD1@microsoft.com...
> "Sue Henderson" wrote:
>
>
>> All 6 PC's are of similar configuration, all six PC's have had Norton AV
>> 2007 installed about two weeks ago, the problem above started early this
>> week
>
>
> 99.5% chance this is the cause. IME of this pile of junk, It almost
> invariably works OK until it updates.
>
> Basically, use anything OTHER than Norton or McAfee. They're the ones to
> avoid.
>
> Other possibilites are a faulty powersaving option in the network card's
> config, or share inactivity-timeout on the server, for which you need to
> change a registry value on the server.
>
> http://support.microsoft.com/kb/297684
>
>
> -------------------------------
>
> An alternative approach to XP network logon -  http://mylogon.net
>
>
>

On Fri, 15 Dec 2006 17:46:44 +1100, "Sue Henderson" <s***@netconnect.com.au>
wrote:

>Hi there,
>
>
>
>I would be so grateful for any help/advice offered for my dilemma as
>follows:
>
>
>
>I have a simple peer to peer network with 6 PC's all running legitimate
>copies of XP Pro. PC 1 acts as a sort of file server. My company runs
>specialty software installed on all PC's this software then accesses its
>database on PC1. The five PC's have mapped networked drives to the file
>server. Everything works fine until all of a sudden the mapped drives
>disappear and consequently the software crashes because it can't find the
>data source. If you open Windows Explorer and try to log onto the mapped
>drive, it times out with some sort of access denied error. If you go into
>"My Network Places" etc you can see all the computers on the network and can
>access any other computer except PC1. There does not appear to be any
>pattern of any sort, the network might stay up 5 hours, 3 hours or maybe
>only an hour or so, there is no pattern. The only remedy is to reboot PC1
>and then re connect all the mapped drives until they crash again.
>
>
>
>Things I have tried:
>
>I have replaced the ADSL modem/router in case there was a DHCP problem
>issuing IP's. I have replaced the network card on PC1. I have replaced
>network cabling. I have checked all PC names are unique, I have checked all
>PC's are on the same workgroup. I read a tip somewhere to enable NetBios
>over TCP which I did but to no avail.
>
>
>
>A brief history:
>
>All 6 PC's are of similar configuration, all six PC's have had Norton AV
>2007 installed about two weeks ago, the problem above started early this
>week (I don't think NAV has anything to do with it, but I am just mentioning
>it here just in case). All PC's had been running perfectly before even with
>NAV 2007. No one installed any new software or software upgrade. No one
>changed any settings or hardware. No one uses IRC or messaging software.
>PC's are used primarily for the specialty software that is used. The
>software people are adamant that it's not their problem (if I had a dollar
>every time I heard that......) although in this instance with my limited
>networking knowledge, I suspect they might be right.

"Chuck" <n***@example.net> wrote in message
news:e7f5o2la2966vdvflb2ju8pmle1qljvpmr@4ax.com...
> On Fri, 15 Dec 2006 17:46:44 +1100, "Sue Henderson"
> <s***@netconnect.com.au>
> wrote:
>
>>Hi there,
>>
>>
>>
>>I would be so grateful for any help/advice offered for my dilemma as
>>follows:
>>
>>
>>
>>I have a simple peer to peer network with 6 PC's all running legitimate
>>copies of XP Pro. PC 1 acts as a sort of file server. My company runs
>>specialty software installed on all PC's this software then accesses its
>>database on PC1. The five PC's have mapped networked drives to the file
>>server. Everything works fine until all of a sudden the mapped drives
>>disappear and consequently the software crashes because it can't find the
>>data source. If you open Windows Explorer and try to log onto the mapped
>>drive, it times out with some sort of access denied error. If you go into
>>"My Network Places" etc you can see all the computers on the network and
>>can
>>access any other computer except PC1. There does not appear to be any
>>pattern of any sort, the network might stay up 5 hours, 3 hours or maybe
>>only an hour or so, there is no pattern. The only remedy is to reboot PC1
>>and then re connect all the mapped drives until they crash again.
>>
>>
>>
>>Things I have tried:
>>
>>I have replaced the ADSL modem/router in case there was a DHCP problem
>>issuing IP's. I have replaced the network card on PC1. I have replaced
>>network cabling. I have checked all PC names are unique, I have checked
>>all
>>PC's are on the same workgroup. I read a tip somewhere to enable NetBios
>>over TCP which I did but to no avail.
>>
>>
>>
>>A brief history:
>>
>>All 6 PC's are of similar configuration, all six PC's have had Norton AV
>>2007 installed about two weeks ago, the problem above started early this
>>week (I don't think NAV has anything to do with it, but I am just
>>mentioning
>>it here just in case). All PC's had been running perfectly before even
>>with
>>NAV 2007. No one installed any new software or software upgrade. No one
>>changed any settings or hardware. No one uses IRC or messaging software.
>>PC's are used primarily for the specialty software that is used. The
>>software people are adamant that it's not their problem (if I had a dollar
>>every time I heard that......) although in this instance with my limited
>>networking knowledge, I suspect they might be right.
>
> Sue,
>
> Is PC1 used as a personal computer too?  What's the power setting on the
> network
> adapter?
> <http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html>
> http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html
>
> Might be useful to see the complete and exact "access denied" error.
> <http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html>
> http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html
>
> Might be good to see what PC1 is doing, when it drops offline.
> <http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html>
> http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html
>
> --
> Cheers,
> Chuck, MS-MVP [Windows - Networking]
> http://nitecruzr.blogspot.com/
> Paranoia is not a problem, when it's a normal response from experience.
> My        email         is          AT         DOT
>   actual       address    pchuck       mvps        org.

On Sat, 16 Dec 2006 06:45:55 +1100, "Sue Henderson" <s***@netconnect.com.au>
wrote:

>"Chuck" <n***@example.net> wrote in message
>news:e7f5o2la2966vdvflb2ju8pmle1qljvpmr@4ax.com...
>> On Fri, 15 Dec 2006 17:46:44 +1100, "Sue Henderson"
>> <s***@netconnect.com.au>
>> wrote:
>>
>>>Hi there,
>>>
>>>
>>>
>>>I would be so grateful for any help/advice offered for my dilemma as
>>>follows:
>>>
>>>
>>>
>>>I have a simple peer to peer network with 6 PC's all running legitimate
>>>copies of XP Pro. PC 1 acts as a sort of file server. My company runs
>>>specialty software installed on all PC's this software then accesses its
>>>database on PC1. The five PC's have mapped networked drives to the file
>>>server. Everything works fine until all of a sudden the mapped drives
>>>disappear and consequently the software crashes because it can't find the
>>>data source. If you open Windows Explorer and try to log onto the mapped
>>>drive, it times out with some sort of access denied error. If you go into
>>>"My Network Places" etc you can see all the computers on the network and
>>>can
>>>access any other computer except PC1. There does not appear to be any
>>>pattern of any sort, the network might stay up 5 hours, 3 hours or maybe
>>>only an hour or so, there is no pattern. The only remedy is to reboot PC1
>>>and then re connect all the mapped drives until they crash again.
>>>
>>>
>>>
>>>Things I have tried:
>>>
>>>I have replaced the ADSL modem/router in case there was a DHCP problem
>>>issuing IP's. I have replaced the network card on PC1. I have replaced
>>>network cabling. I have checked all PC names are unique, I have checked
>>>all
>>>PC's are on the same workgroup. I read a tip somewhere to enable NetBios
>>>over TCP which I did but to no avail.
>>>
>>>
>>>
>>>A brief history:
>>>
>>>All 6 PC's are of similar configuration, all six PC's have had Norton AV
>>>2007 installed about two weeks ago, the problem above started early this
>>>week (I don't think NAV has anything to do with it, but I am just
>>>mentioning
>>>it here just in case). All PC's had been running perfectly before even
>>>with
>>>NAV 2007. No one installed any new software or software upgrade. No one
>>>changed any settings or hardware. No one uses IRC or messaging software.
>>>PC's are used primarily for the specialty software that is used. The
>>>software people are adamant that it's not their problem (if I had a dollar
>>>every time I heard that......) although in this instance with my limited
>>>networking knowledge, I suspect they might be right.
>>
>> Sue,
>>
>> Is PC1 used as a personal computer too?  What's the power setting on the
>> network
>> adapter?
>> <http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html>
>> http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html
>>
>> Might be useful to see the complete and exact "access denied" error.
>> <http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html>
>> http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html
>>
>> Might be good to see what PC1 is doing, when it drops offline.
>> <http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html>
>> http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html

>Hi Chuck,
>
>I believe it is set to "allow this computer to turn off the device to save
>power". I don't believe the card would be shutting down as there is always
>network activity?

"Chuck" <n***@example.net> wrote in message
news:ms06o2l6v8qdamauhbav7jd9u1f7im278v@4ax.com...
> On Sat, 16 Dec 2006 06:45:55 +1100, "Sue Henderson"
> <s***@netconnect.com.au>
> wrote:
>
>>"Chuck" <n***@example.net> wrote in message
>>news:e7f5o2la2966vdvflb2ju8pmle1qljvpmr@4ax.com...
>>> On Fri, 15 Dec 2006 17:46:44 +1100, "Sue Henderson"
>>> <s***@netconnect.com.au>
>>> wrote:
>>>
>>>>Hi there,
>>>>
>>>>
>>>>
>>>>I would be so grateful for any help/advice offered for my dilemma as
>>>>follows:
>>>>
>>>>
>>>>
>>>>I have a simple peer to peer network with 6 PC's all running legitimate
>>>>copies of XP Pro. PC 1 acts as a sort of file server. My company runs
>>>>specialty software installed on all PC's this software then accesses its
>>>>database on PC1. The five PC's have mapped networked drives to the file
>>>>server. Everything works fine until all of a sudden the mapped drives
>>>>disappear and consequently the software crashes because it can't find
>>>>the
>>>>data source. If you open Windows Explorer and try to log onto the mapped
>>>>drive, it times out with some sort of access denied error. If you go
>>>>into
>>>>"My Network Places" etc you can see all the computers on the network and
>>>>can
>>>>access any other computer except PC1. There does not appear to be any
>>>>pattern of any sort, the network might stay up 5 hours, 3 hours or maybe
>>>>only an hour or so, there is no pattern. The only remedy is to reboot
>>>>PC1
>>>>and then re connect all the mapped drives until they crash again.
>>>>
>>>>
>>>>
>>>>Things I have tried:
>>>>
>>>>I have replaced the ADSL modem/router in case there was a DHCP problem
>>>>issuing IP's. I have replaced the network card on PC1. I have replaced
>>>>network cabling. I have checked all PC names are unique, I have checked
>>>>all
>>>>PC's are on the same workgroup. I read a tip somewhere to enable NetBios
>>>>over TCP which I did but to no avail.
>>>>
>>>>
>>>>
>>>>A brief history:
>>>>
>>>>All 6 PC's are of similar configuration, all six PC's have had Norton AV
>>>>2007 installed about two weeks ago, the problem above started early this
>>>>week (I don't think NAV has anything to do with it, but I am just
>>>>mentioning
>>>>it here just in case). All PC's had been running perfectly before even
>>>>with
>>>>NAV 2007. No one installed any new software or software upgrade. No one
>>>>changed any settings or hardware. No one uses IRC or messaging software.
>>>>PC's are used primarily for the specialty software that is used. The
>>>>software people are adamant that it's not their problem (if I had a
>>>>dollar
>>>>every time I heard that......) although in this instance with my limited
>>>>networking knowledge, I suspect they might be right.
>>>
>>> Sue,
>>>
>>> Is PC1 used as a personal computer too?  What's the power setting on the
>>> network
>>> adapter?
>>> <http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html>
>>> http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html
>>>
>>> Might be useful to see the complete and exact "access denied" error.
>>> <http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html>
>>> http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html
>>>
>>> Might be good to see what PC1 is doing, when it drops offline.
>>> <http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html>
>>> http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html
>
>>Hi Chuck,
>>
>>I believe it is set to "allow this computer to turn off the device to save
>>power". I don't believe the card would be shutting down as there is always
>>network activity?
>
> Don't confuse Wake On LAN with network adapter power saver.  The latter is
> generally tied to lack of keyboard / mouse activity, and generally
> synchronises
> with the screensaver.  If you have it set to "allow this computer to turn
> off
> the device to save power", and there's nobody at the keyboard, this could
> well
> be a problem.  When you setup a server, this is one setting to disable.
>
> --
> Cheers,
> Chuck, MS-MVP [Windows - Networking]
> http://nitecruzr.blogspot.com/
> Paranoia is not a problem, when it's a normal response from experience.
> My        email         is          AT         DOT
>   actual       address    pchuck       mvps        org.

"Chuck" <n***@example.net> wrote in message
news:ms06o2l6v8qdamauhbav7jd9u1f7im278v@4ax.com...
> On Sat, 16 Dec 2006 06:45:55 +1100, "Sue Henderson"
> <s***@netconnect.com.au>
> wrote:
>
>>"Chuck" <n***@example.net> wrote in message
>>news:e7f5o2la2966vdvflb2ju8pmle1qljvpmr@4ax.com...
>>> On Fri, 15 Dec 2006 17:46:44 +1100, "Sue Henderson"
>>> <s***@netconnect.com.au>
>>> wrote:
>>>
>>>>Hi there,
>>>>
>>>>
>>>>
>>>>I would be so grateful for any help/advice offered for my dilemma as
>>>>follows:
>>>>
>>>>
>>>>
>>>>I have a simple peer to peer network with 6 PC's all running legitimate
>>>>copies of XP Pro. PC 1 acts as a sort of file server. My company runs
>>>>specialty software installed on all PC's this software then accesses its
>>>>database on PC1. The five PC's have mapped networked drives to the file
>>>>server. Everything works fine until all of a sudden the mapped drives
>>>>disappear and consequently the software crashes because it can't find
>>>>the
>>>>data source. If you open Windows Explorer and try to log onto the mapped
>>>>drive, it times out with some sort of access denied error. If you go
>>>>into
>>>>"My Network Places" etc you can see all the computers on the network and
>>>>can
>>>>access any other computer except PC1. There does not appear to be any
>>>>pattern of any sort, the network might stay up 5 hours, 3 hours or maybe
>>>>only an hour or so, there is no pattern. The only remedy is to reboot
>>>>PC1
>>>>and then re connect all the mapped drives until they crash again.
>>>>
>>>>
>>>>
>>>>Things I have tried:
>>>>
>>>>I have replaced the ADSL modem/router in case there was a DHCP problem
>>>>issuing IP's. I have replaced the network card on PC1. I have replaced
>>>>network cabling. I have checked all PC names are unique, I have checked
>>>>all
>>>>PC's are on the same workgroup. I read a tip somewhere to enable NetBios
>>>>over TCP which I did but to no avail.
>>>>
>>>>
>>>>
>>>>A brief history:
>>>>
>>>>All 6 PC's are of similar configuration, all six PC's have had Norton AV
>>>>2007 installed about two weeks ago, the problem above started early this
>>>>week (I don't think NAV has anything to do with it, but I am just
>>>>mentioning
>>>>it here just in case). All PC's had been running perfectly before even
>>>>with
>>>>NAV 2007. No one installed any new software or software upgrade. No one
>>>>changed any settings or hardware. No one uses IRC or messaging software.
>>>>PC's are used primarily for the specialty software that is used. The
>>>>software people are adamant that it's not their problem (if I had a
>>>>dollar
>>>>every time I heard that......) although in this instance with my limited
>>>>networking knowledge, I suspect they might be right.
>>>
>>> Sue,
>>>
>>> Is PC1 used as a personal computer too?  What's the power setting on the
>>> network
>>> adapter?
>>> <http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html>
>>> http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html
>>>
>>> Might be useful to see the complete and exact "access denied" error.
>>> <http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html>
>>> http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html
>>>
>>> Might be good to see what PC1 is doing, when it drops offline.
>>> <http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html>
>>> http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html
>
>>Hi Chuck,
>>
>>I believe it is set to "allow this computer to turn off the device to save
>>power". I don't believe the card would be shutting down as there is always
>>network activity?
>
> Don't confuse Wake On LAN with network adapter power saver.  The latter is
> generally tied to lack of keyboard / mouse activity, and generally
> synchronises
> with the screensaver.  If you have it set to "allow this computer to turn
> off
> the device to save power", and there's nobody at the keyboard, this could
> well
> be a problem.  When you setup a server, this is one setting to disable.
>
> --
> Cheers,
> Chuck, MS-MVP [Windows - Networking]
> http://nitecruzr.blogspot.com/
> Paranoia is not a problem, when it's a normal response from experience.
> My        email         is          AT         DOT
>   actual       address    pchuck       mvps        org.

On Mon, 18 Dec 2006 14:16:09 +1100, "Sue Henderson" <s***@netconnect.com.au>
wrote:

>"Chuck" <n***@example.net> wrote in message
>news:ms06o2l6v8qdamauhbav7jd9u1f7im278v@4ax.com...
>> On Sat, 16 Dec 2006 06:45:55 +1100, "Sue Henderson"
>> <s***@netconnect.com.au>
>> wrote:
>>
>>>"Chuck" <n***@example.net> wrote in message
>>>news:e7f5o2la2966vdvflb2ju8pmle1qljvpmr@4ax.com...
>>>> On Fri, 15 Dec 2006 17:46:44 +1100, "Sue Henderson"
>>>> <s***@netconnect.com.au>
>>>> wrote:
>>>>
>>>>>Hi there,
>>>>>
>>>>>
>>>>>
>>>>>I would be so grateful for any help/advice offered for my dilemma as
>>>>>follows:
>>>>>
>>>>>
>>>>>
>>>>>I have a simple peer to peer network with 6 PC's all running legitimate
>>>>>copies of XP Pro. PC 1 acts as a sort of file server. My company runs
>>>>>specialty software installed on all PC's this software then accesses its
>>>>>database on PC1. The five PC's have mapped networked drives to the file
>>>>>server. Everything works fine until all of a sudden the mapped drives
>>>>>disappear and consequently the software crashes because it can't find
>>>>>the
>>>>>data source. If you open Windows Explorer and try to log onto the mapped
>>>>>drive, it times out with some sort of access denied error. If you go
>>>>>into
>>>>>"My Network Places" etc you can see all the computers on the network and
>>>>>can
>>>>>access any other computer except PC1. There does not appear to be any
>>>>>pattern of any sort, the network might stay up 5 hours, 3 hours or maybe
>>>>>only an hour or so, there is no pattern. The only remedy is to reboot
>>>>>PC1
>>>>>and then re connect all the mapped drives until they crash again.
>>>>>
>>>>>
>>>>>
>>>>>Things I have tried:
>>>>>
>>>>>I have replaced the ADSL modem/router in case there was a DHCP problem
>>>>>issuing IP's. I have replaced the network card on PC1. I have replaced
>>>>>network cabling. I have checked all PC names are unique, I have checked
>>>>>all
>>>>>PC's are on the same workgroup. I read a tip somewhere to enable NetBios
>>>>>over TCP which I did but to no avail.
>>>>>
>>>>>
>>>>>
>>>>>A brief history:
>>>>>
>>>>>All 6 PC's are of similar configuration, all six PC's have had Norton AV
>>>>>2007 installed about two weeks ago, the problem above started early this
>>>>>week (I don't think NAV has anything to do with it, but I am just
>>>>>mentioning
>>>>>it here just in case). All PC's had been running perfectly before even
>>>>>with
>>>>>NAV 2007. No one installed any new software or software upgrade. No one
>>>>>changed any settings or hardware. No one uses IRC or messaging software.
>>>>>PC's are used primarily for the specialty software that is used. The
>>>>>software people are adamant that it's not their problem (if I had a
>>>>>dollar
>>>>>every time I heard that......) although in this instance with my limited
>>>>>networking knowledge, I suspect they might be right.
>>>>
>>>> Sue,
>>>>
>>>> Is PC1 used as a personal computer too?  What's the power setting on the
>>>> network
>>>> adapter?
>>>> <http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html>
>>>> http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html
>>>>
>>>> Might be useful to see the complete and exact "access denied" error.
>>>> <http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html>
>>>> http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html
>>>>
>>>> Might be good to see what PC1 is doing, when it drops offline.
>>>> <http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html>
>>>> http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html
>>
>>>Hi Chuck,
>>>
>>>I believe it is set to "allow this computer to turn off the device to save
>>>power". I don't believe the card would be shutting down as there is always
>>>network activity?
>>
>> Don't confuse Wake On LAN with network adapter power saver.  The latter is
>> generally tied to lack of keyboard / mouse activity, and generally
>> synchronises
>> with the screensaver.  If you have it set to "allow this computer to turn
>> off
>> the device to save power", and there's nobody at the keyboard, this could
>> well
>> be a problem.  When you setup a server, this is one setting to disable.

>Hi again,
>
>Well it's happened again. Over the weekend, I reinstalled Windows over the
>top on the server. I also disabled the servers network card power saving
>feature.
>
>Any other ideas?
>
>Thanks in advance,
>
>Sue

"Chuck" <n***@example.net> wrote in message
news:skcdo2la71dts0ncbmmiofl2absv295v7q@4ax.com...
> On Mon, 18 Dec 2006 14:16:09 +1100, "Sue Henderson"
> <s***@netconnect.com.au>
> wrote:
>
>>"Chuck" <n***@example.net> wrote in message
>>news:ms06o2l6v8qdamauhbav7jd9u1f7im278v@4ax.com...
>>> On Sat, 16 Dec 2006 06:45:55 +1100, "Sue Henderson"
>>> <s***@netconnect.com.au>
>>> wrote:
>>>
>>>>"Chuck" <n***@example.net> wrote in message
>>>>news:e7f5o2la2966vdvflb2ju8pmle1qljvpmr@4ax.com...
>>>>> On Fri, 15 Dec 2006 17:46:44 +1100, "Sue Henderson"
>>>>> <s***@netconnect.com.au>
>>>>> wrote:
>>>>>
>>>>>>Hi there,
>>>>>>
>>>>>>
>>>>>>
>>>>>>I would be so grateful for any help/advice offered for my dilemma as
>>>>>>follows:
>>>>>>
>>>>>>
>>>>>>
>>>>>>I have a simple peer to peer network with 6 PC's all running
>>>>>>legitimate
>>>>>>copies of XP Pro. PC 1 acts as a sort of file server. My company runs
>>>>>>specialty software installed on all PC's this software then accesses
>>>>>>its
>>>>>>database on PC1. The five PC's have mapped networked drives to the
>>>>>>file
>>>>>>server. Everything works fine until all of a sudden the mapped drives
>>>>>>disappear and consequently the software crashes because it can't find
>>>>>>the
>>>>>>data source. If you open Windows Explorer and try to log onto the
>>>>>>mapped
>>>>>>drive, it times out with some sort of access denied error. If you go
>>>>>>into
>>>>>>"My Network Places" etc you can see all the computers on the network
>>>>>>and
>>>>>>can
>>>>>>access any other computer except PC1. There does not appear to be any
>>>>>>pattern of any sort, the network might stay up 5 hours, 3 hours or
>>>>>>maybe
>>>>>>only an hour or so, there is no pattern. The only remedy is to reboot
>>>>>>PC1
>>>>>>and then re connect all the mapped drives until they crash again.
>>>>>>
>>>>>>
>>>>>>
>>>>>>Things I have tried:
>>>>>>
>>>>>>I have replaced the ADSL modem/router in case there was a DHCP problem
>>>>>>issuing IP's. I have replaced the network card on PC1. I have replaced
>>>>>>network cabling. I have checked all PC names are unique, I have
>>>>>>checked
>>>>>>all
>>>>>>PC's are on the same workgroup. I read a tip somewhere to enable
>>>>>>NetBios
>>>>>>over TCP which I did but to no avail.
>>>>>>
>>>>>>
>>>>>>
>>>>>>A brief history:
>>>>>>
>>>>>>All 6 PC's are of similar configuration, all six PC's have had Norton
>>>>>>AV
>>>>>>2007 installed about two weeks ago, the problem above started early
>>>>>>this
>>>>>>week (I don't think NAV has anything to do with it, but I am just
>>>>>>mentioning
>>>>>>it here just in case). All PC's had been running perfectly before even
>>>>>>with
>>>>>>NAV 2007. No one installed any new software or software upgrade. No
>>>>>>one
>>>>>>changed any settings or hardware. No one uses IRC or messaging
>>>>>>software.
>>>>>>PC's are used primarily for the specialty software that is used. The
>>>>>>software people are adamant that it's not their problem (if I had a
>>>>>>dollar
>>>>>>every time I heard that......) although in this instance with my
>>>>>>limited
>>>>>>networking knowledge, I suspect they might be right.
>>>>>
>>>>> Sue,
>>>>>
>>>>> Is PC1 used as a personal computer too?  What's the power setting on
>>>>> the
>>>>> network
>>>>> adapter?
>>>>> <http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html>
>>>>> http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html
>>>>>
>>>>> Might be useful to see the complete and exact "access denied" error.
>>>>> <http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html>
>>>>> http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html
>>>>>
>>>>> Might be good to see what PC1 is doing, when it drops offline.
>>>>> <http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html>
>>>>> http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html
>>>
>>>>Hi Chuck,
>>>>
>>>>I believe it is set to "allow this computer to turn off the device to
>>>>save
>>>>power". I don't believe the card would be shutting down as there is
>>>>always
>>>>network activity?
>>>
>>> Don't confuse Wake On LAN with network adapter power saver.  The latter
>>> is
>>> generally tied to lack of keyboard / mouse activity, and generally
>>> synchronises
>>> with the screensaver.  If you have it set to "allow this computer to
>>> turn
>>> off
>>> the device to save power", and there's nobody at the keyboard, this
>>> could
>>> well
>>> be a problem.  When you setup a server, this is one setting to disable.
>
>>Hi again,
>>
>>Well it's happened again. Over the weekend, I reinstalled Windows over the
>>top on the server. I also disabled the servers network card power saving
>>feature.
>>
>>Any other ideas?
>>
>>Thanks in advance,
>>
>>Sue
>
> Sue,
>
> I'd want to see what's happening to the network, specifically, when PC1
> disappears.
>
> Do you have an administrative account, that you use to access all
> computers?  If
> not, set one up - you'll need it.  Diagnosing the problem will be a lot
> easier
> if you can run diagnostics from one computer.
>
> Get browstat, and install it (copy it) onto each computer.
> <http://nitecruzr.blogspot.com/2005/05/browstat-utility-from-microsoft.html>
> http://nitecruzr.blogspot.com/2005/05/browstat-utility-from-microsoft.html
>
> Get PSTools, and learn how to use PSExec to run tasks on one computer,
> from
> another computer.
> <http://nitecruzr.blogspot.com/2005/05/essential-tools-for-desktop-and.html#PSTools>
> http://nitecruzr.blogspot.com/2005/05/essential-tools-for-desktop-and.html#PSTools
>
> When the network is running properly, run "browstat status", "ipconfig
> /all",
> and "net config server" from each computer, using PSExec.  Here's a quick
> little
> script that I use occasionally.
> <http://nitecruzr.blogspot.com/2006/12/netcheck-source.html>
> http://nitecruzr.blogspot.com/2006/12/netcheck-source.html
>
> --
> Cheers,
> Chuck, MS-MVP [Windows - Networking]
> http://nitecruzr.blogspot.com/
> Paranoia is not a problem, when it's a normal response from experience.
> My        email         is          AT         DOT
>   actual       address    pchuck       mvps        org.

On Thu, 4 Jan 2007 09:04:38 +1100, "Sue Henderson" <s***@netconnect.com.au>
wrote:

>"Chuck" <n***@example.net> wrote in message
>news:skcdo2la71dts0ncbmmiofl2absv295v7q@4ax.com...
>> On Mon, 18 Dec 2006 14:16:09 +1100, "Sue Henderson"
>> <s***@netconnect.com.au>
>> wrote:
>>
>>>"Chuck" <n***@example.net> wrote in message
>>>news:ms06o2l6v8qdamauhbav7jd9u1f7im278v@4ax.com...
>>>> On Sat, 16 Dec 2006 06:45:55 +1100, "Sue Henderson"
>>>> <s***@netconnect.com.au>
>>>> wrote:
>>>>
>>>>>"Chuck" <n***@example.net> wrote in message
>>>>>news:e7f5o2la2966vdvflb2ju8pmle1qljvpmr@4ax.com...
>>>>>> On Fri, 15 Dec 2006 17:46:44 +1100, "Sue Henderson"
>>>>>> <s***@netconnect.com.au>
>>>>>> wrote:
>>>>>>
>>>>>>>Hi there,
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>I would be so grateful for any help/advice offered for my dilemma as
>>>>>>>follows:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>I have a simple peer to peer network with 6 PC's all running
>>>>>>>legitimate
>>>>>>>copies of XP Pro. PC 1 acts as a sort of file server. My company runs
>>>>>>>specialty software installed on all PC's this software then accesses
>>>>>>>its
>>>>>>>database on PC1. The five PC's have mapped networked drives to the
>>>>>>>file
>>>>>>>server. Everything works fine until all of a sudden the mapped drives
>>>>>>>disappear and consequently the software crashes because it can't find
>>>>>>>the
>>>>>>>data source. If you open Windows Explorer and try to log onto the
>>>>>>>mapped
>>>>>>>drive, it times out with some sort of access denied error. If you go
>>>>>>>into
>>>>>>>"My Network Places" etc you can see all the computers on the network
>>>>>>>and
>>>>>>>can
>>>>>>>access any other computer except PC1. There does not appear to be any
>>>>>>>pattern of any sort, the network might stay up 5 hours, 3 hours or
>>>>>>>maybe
>>>>>>>only an hour or so, there is no pattern. The only remedy is to reboot
>>>>>>>PC1
>>>>>>>and then re connect all the mapped drives until they crash again.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>Things I have tried:
>>>>>>>
>>>>>>>I have replaced the ADSL modem/router in case there was a DHCP problem
>>>>>>>issuing IP's. I have replaced the network card on PC1. I have replaced
>>>>>>>network cabling. I have checked all PC names are unique, I have
>>>>>>>checked
>>>>>>>all
>>>>>>>PC's are on the same workgroup. I read a tip somewhere to enable
>>>>>>>NetBios
>>>>>>>over TCP which I did but to no avail.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>A brief history:
>>>>>>>
>>>>>>>All 6 PC's are of similar configuration, all six PC's have had Norton
>>>>>>>AV
>>>>>>>2007 installed about two weeks ago, the problem above started early
>>>>>>>this
>>>>>>>week (I don't think NAV has anything to do with it, but I am just
>>>>>>>mentioning
>>>>>>>it here just in case). All PC's had been running perfectly before even
>>>>>>>with
>>>>>>>NAV 2007. No one installed any new software or software upgrade. No
>>>>>>>one
>>>>>>>changed any settings or hardware. No one uses IRC or messaging
>>>>>>>software.
>>>>>>>PC's are used primarily for the specialty software that is used. The
>>>>>>>software people are adamant that it's not their problem (if I had a
>>>>>>>dollar
>>>>>>>every time I heard that......) although in this instance with my
>>>>>>>limited
>>>>>>>networking knowledge, I suspect they might be right.
>>>>>>
>>>>>> Sue,
>>>>>>
>>>>>> Is PC1 used as a personal computer too?  What's the power setting on
>>>>>> the
>>>>>> network
>>>>>> adapter?
>>>>>> <http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html>
>>>>>> http://nitecruzr.blogspot.com/2005/06/does-your-computer-lose-network.html
>>>>>>
>>>>>> Might be useful to see the complete and exact "access denied" error.
>>>>>> <http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html>
>>>>>> http://nitecruzr.blogspot.com/2006/01/look-at-complete-detail-in-error.html
>>>>>>
>>>>>> Might be good to see what PC1 is doing, when it drops offline.
>>>>>> <http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html>
>>>>>> http://nitecruzr.blogspot.com/2006/04/watching-what-your-computer-is-doing.html
>>>>
>>>>>Hi Chuck,
>>>>>
>>>>>I believe it is set to "allow this computer to turn off the device to
>>>>>save
>>>>>power". I don't believe the card would be shutting down as there is
>>>>>always
>>>>>network activity?
>>>>
>>>> Don't confuse Wake On LAN with network adapter power saver.  The latter
>>>> is
>>>> generally tied to lack of keyboard / mouse activity, and generally
>>>> synchronises
>>>> with the screensaver.  If you have it set to "allow this computer to
>>>> turn
>>>> off
>>>> the device to save power", and there's nobody at the keyboard, this
>>>> could
>>>> well
>>>> be a problem.  When you setup a server, this is one setting to disable.
>>
>>>Hi again,
>>>
>>>Well it's happened again. Over the weekend, I reinstalled Windows over the
>>>top on the server. I also disabled the servers network card power saving
>>>feature.
>>>
>>>Any other ideas?
>>>
>>>Thanks in advance,
>>>
>>>Sue
>>
>> Sue,
>>
>> I'd want to see what's happening to the network, specifically, when PC1
>> disappears.
>>
>> Do you have an administrative account, that you use to access all
>> computers?  If
>> not, set one up - you'll need it.  Diagnosing the problem will be a lot
>> easier
>> if you can run diagnostics from one computer.
>>
>> Get browstat, and install it (copy it) onto each computer.
>> <http://nitecruzr.blogspot.com/2005/05/browstat-utility-from-microsoft.html>
>> http://nitecruzr.blogspot.com/2005/05/browstat-utility-from-microsoft.html
>>
>> Get PSTools, and learn how to use PSExec to run tasks on one computer,
>> from
>> another computer.
>> <http://nitecruzr.blogspot.com/2005/05/essential-tools-for-desktop-and.html#PSTools>
>> http://nitecruzr.blogspot.com/2005/05/essential-tools-for-desktop-and.html#PSTools
>>
>> When the network is running properly, run "browstat status", "ipconfig
>> /all",
>> and "net config server" from each computer, using PSExec.  Here's a quick
>> little
>> script that I use occasionally.
>> <http://nitecruzr.blogspot.com/2006/12/netcheck-source.html>
>> http://nitecruzr.blogspot.com/2006/12/netcheck-source.html

>Thanks again for your help. You may be interested to know what fixed the
>problem in the end. I simply removed Norton AV 2007 from the server PC and
>the network hasn't missed a beat since. I installed Avast AV instead which
>appears to be adequate.
>
>Thanks again,
>
>Sue.