Windows 2000 Server Keeps Losing TCP/IP Settings.

  • Thread starter Thread starter Trevor Smith
  • Start date Start date
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Trevor Smith

Can anyone give me a clue?

I have a small office network, and I have a Windows 2000 SP4 server with
all patches and security updates installed.

The server runs DNS and WINS.
Suddenly I noticed address lookup failures on the network, and checking
the server, I see that it lost TCP/IP settings and the static IP that
was assigned to it.

Changing the TCP/IP settings is not working, as I specify the IP
address, Subnet Mask, Default gateway, and the assign DNS server to the
same IP address, click OK, and then less than a minute later the
settings are lost and the IP address is set to obtain IP address
automatically.

I have noticed one thing.

If I stop the DNS service, all the configured settings are seen there.
If I start the DNS service, then the IP address, subnet mask, and the
default gateway are lost, and set to obtain automatically.



I have ran all the tests that I can think of, scanned against Trojans,
virus, keyloggers, dialers, spyware, and checked for hard drive errors,
and even defragmentation.

Any clues would appreciated.
Thanks.
 
Trevor Smith said:
Can anyone give me a clue?

I have a small office network, and I have a Windows 2000 SP4 server with
all patches and security updates installed.

The server runs DNS and WINS.
Suddenly I noticed address lookup failures on the network, and checking
the server, I see that it lost TCP/IP settings and the static IP that
was assigned to it.

Changing the TCP/IP settings is not working, as I specify the IP
address, Subnet Mask, Default gateway, and the assign DNS server to the
same IP address, click OK, and then less than a minute later the
settings are lost and the IP address is set to obtain IP address
automatically.

I have noticed one thing.

If I stop the DNS service, all the configured settings are seen there.
Click to expand...

In DNS? Surely you mean you see the correct settings when you
run IPConfig /all?
If I start the DNS service, then the IP address, subnet mask, and the
default gateway are lost, and set to obtain automatically.
Click to expand...

I was prepared to suggest that the problem was likely with your
NIC Drivers since if he NIC was getting uninstalled/installed then
you would lose the settings, but if merely turning on the DNS server
is 'causing the problem' then likely there is something wrong with
that service that (practically) no one else experiences.
I have ran all the tests that I can think of, scanned against Trojans,
virus, keyloggers, dialers, spyware, and checked for hard drive errors,
and even defragmentation.
Click to expand...

Have you tried a REPAIR install? Boot from CDROM and being
a regular install but make sure you are offered a chance (and select)
to REPAIR the current installation.

Then upgrade to most current SP and all current hotfixes.

--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]

Any clues would appreciated.
 
I'd go with Herb on at least trying a different NIC, then a repair install
if that fails. I recently had weird problems with a NIC that would just stop
working. I didn't have to re-boot or anything, just disable and re-enable it
in device manager. Then it would work for a couple of days but eventually
quit again.

...kurt


Herb Martin said:
Trevor Smith said:
Can anyone give me a clue?

I have a small office network, and I have a Windows 2000 SP4 server with
all patches and security updates installed.

The server runs DNS and WINS.
Suddenly I noticed address lookup failures on the network, and checking
the server, I see that it lost TCP/IP settings and the static IP that
was assigned to it.

Changing the TCP/IP settings is not working, as I specify the IP
address, Subnet Mask, Default gateway, and the assign DNS server to the
same IP address, click OK, and then less than a minute later the
settings are lost and the IP address is set to obtain IP address
automatically.

I have noticed one thing.

If I stop the DNS service, all the configured settings are seen there.
Click to expand...

In DNS? Surely you mean you see the correct settings when you
run IPConfig /all?
If I start the DNS service, then the IP address, subnet mask, and the
default gateway are lost, and set to obtain automatically.
Click to expand...

I was prepared to suggest that the problem was likely with your
NIC Drivers since if he NIC was getting uninstalled/installed then
you would lose the settings, but if merely turning on the DNS server
is 'causing the problem' then likely there is something wrong with
that service that (practically) no one else experiences.
I have ran all the tests that I can think of, scanned against Trojans,
virus, keyloggers, dialers, spyware, and checked for hard drive errors,
and even defragmentation.
Click to expand...

Have you tried a REPAIR install? Boot from CDROM and being
a regular install but make sure you are offered a chance (and select)
to REPAIR the current installation.

Then upgrade to most current SP and all current hotfixes.

--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]

Any clues would appreciated.
Thanks.
Click to expand...
Click to expand...
 
Kurt said:
I'd go with Herb on at least trying a different NIC, then a repair install
if that fails. I recently had weird problems with a NIC that would just
stop working. I didn't have to re-boot or anything, just disable and
re-enable it in device manager. Then it would work for a couple of days
but eventually quit again.
Click to expand...

I am not sure that I did (in fact) emphasize a "bad NIC"
enough in my answer so perhaps it is I who agrees with
Kurt <grin>

Given that, I would also strongly encourage checking the
cables if no other resolution appears. A bad cable or loose
connector, might turn some NICs off (with 'link detect' enabled.)



--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]
..kurt


Herb Martin said:
Trevor Smith said:
Can anyone give me a clue?

I have a small office network, and I have a Windows 2000 SP4 server with
all patches and security updates installed.

The server runs DNS and WINS.
Suddenly I noticed address lookup failures on the network, and checking
the server, I see that it lost TCP/IP settings and the static IP that
was assigned to it.

Changing the TCP/IP settings is not working, as I specify the IP
address, Subnet Mask, Default gateway, and the assign DNS server to the
same IP address, click OK, and then less than a minute later the
settings are lost and the IP address is set to obtain IP address
automatically.

I have noticed one thing.

If I stop the DNS service, all the configured settings are seen there.
Click to expand...

In DNS? Surely you mean you see the correct settings when you
run IPConfig /all?
If I start the DNS service, then the IP address, subnet mask, and the
default gateway are lost, and set to obtain automatically.
Click to expand...

I was prepared to suggest that the problem was likely with your
NIC Drivers since if he NIC was getting uninstalled/installed then
you would lose the settings, but if merely turning on the DNS server
is 'causing the problem' then likely there is something wrong with
that service that (practically) no one else experiences.
I have ran all the tests that I can think of, scanned against Trojans,
virus, keyloggers, dialers, spyware, and checked for hard drive errors,
and even defragmentation.
Click to expand...

Have you tried a REPAIR install? Boot from CDROM and being
a regular install but make sure you are offered a chance (and select)
to REPAIR the current installation.

Then upgrade to most current SP and all current hotfixes.

--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]

Any clues would appreciated.
Thanks.
Click to expand...
Click to expand...
Click to expand...
 
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