Cannot detect DNS servers

up2speed
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I am an IT support tech.  I am working with a client who continually has problems connecting to the internet.  When he runs an ipconfig /all, he gets a valid IP address, the default gateway and DHCP servers are all correct.  However, there is no DNS servers listed in the ipconfig /all report.  Checked his IP settings and he is set to obtain DNS servers automatically.  When a DNS server is added statically, he can connect to the internet, until he reboots his computer, then it tries to obtain DNS automatically again, and he can no longer access the internet.  Tried resetting the IP stack, but that did not solve anything.  Please Help
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Commented:
What does he use as his DHCP Server?
DHCP Servers need to be set up to specifically pass the DNS servers. This is known as DHCP Option 6

Author

Commented:
He is using one of the domain controllers for DHCP.  Option 6 is configured.  He works in a large office building and he is the only one having this problem, so I know that it is isolated to his computer.

Commented:
Try this I had a similar issue on my network.  Go to the DHCP server and exclude that IP address from distribution and flush and renew the workstation.  Then see if you get DNS services.  If it does work maybe someone can explain why.
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Commented:
Is the dhcp client service running?
What happens when you have them run: ipconfig /registerdns
Is the event viewing showing anything?

Author

Commented:
Tried excluding the IP address and having him reboot his computer, but he is still having the same problem.  DHCP and DNS client are both running and there is nothing in the event logs.
Commented:
Ran a Windows repair on the system and it resolved the issue.

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