Windows Server 2008 - Clear DNS Cache

Izi · 7 Mar 2011 at 16:39

Does anyone know a way to clear the DNS cache every 24 hours on Windows Server 2008?

DNS sporadically seems to stop working, a clear DNS cache does the trick. Its windows server 2008 SBS.

Damn wrong forum! Mod please delete or move to Windows software for me?

ruffneck · 7 Mar 2011 at 17:06

well you could schedule an ipconfig /flushdns but this isn't the question you should be asking.

something can't be setup correctly if your having to ditch the dns cache every 24hrs

Coldzero · 7 Mar 2011 at 18:02

ruffneck said:
well you could schedule an ipconfig /flushdns but this isn't the question you should be asking.

something can't be setup correctly if your having to ditch the dns cache every 24hrs

Indeed, checked eventvwr?

unclepablo · 7 Mar 2011 at 21:04

Try this...

I had a very similar problem on a newly built Windows 2008 R2 server with the DNS service effectively frequently stopping.

After much searching, I found this little gem which solved it for me, might be worth a try:-

http://support.microsoft.com/default.aspx?scid=kb;EN-US;968372

Izi · 7 Mar 2011 at 21:20

unclepablo said:
I had a very similar problem on a newly built Windows 2008 R2 server with the DNS service effectively frequently stopping.

After much searching, I found this little gem which solved it for me, might be worth a try:-

http://support.microsoft.com/default.aspx?scid=kb;EN-US;968372

I had already done that and it seemed to help but still randomly happens.

Especially with local name resolving.

PAz · 7 Mar 2011 at 21:31

i assume this is just one server thats failing to resolve after x number of hours?

Izi · 7 Mar 2011 at 22:17

PAz said:
i assume this is just one server thats failing to resolve after x number of hours?

i only run 1 dns server.

unclepablo · 7 Mar 2011 at 22:44

I had already done that and it seemed to help but still randomly happens.

OK. The other problem I had with DNS was caused by one of the client machines having a different DNS server to the others. (One of them was using the router for DNS, rather than the W2K8 DNS server). Worth checking?

Izi · 8 Mar 2011 at 13:11

unclepablo said:
OK. The other problem I had with DNS was caused by one of the client machines having a different DNS server to the others. (One of them was using the router for DNS, rather than the W2K8 DNS server). Worth checking?

cheers, i will take a look.