No logon servers available to process logon request

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Originally Posted by SYNACK

If you have STP turned on in the switches this is more likely and should be set to RSTP/Portfast. Also if you have intel GB NICs there is an advanced setting "Wait for Link" which should be set to "on" as otherwise the driver will not wait for IP connectivity at all by default. The default setting is 'auto' which is wrong and causes issues. Some other cards have simmilar settings and these can help hugely with initial network issues. The other thing to check is that the drivers are up to date and also if the machines have AMT/vPro you may need/want to upgrade the BIOS to the latest version as sometimes the managment stuff gets in the way of the network sensing at the exact wrong time.

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I Agree, but be careful enabliong RSTP/Portfast - make sure your network is correctly configured the last thing you want is switch loops! I'd check your DNS settings on the sever that is rolling out your IP's via DHCP make sure the DNS settings are correct and are being configured properly.

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Originally Posted by Michael

On your either of your DCs open Active Directory Sites and Services > Default-First-Site-Name > Servers.

Expand SERVERNAME, then click on NTDS Settings. To the right, it should display <automatically generated>. Right click this and select 'Replicate Now'.

You should receive the message 'Active Directory Domain Services has replicated the connections.'

Repeat this for all listed DCs, so you know it works both ways.

If one of your replications fail (for whatever reason) the odds are it is DNS related. DNS rules everything in Windows Server.

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There is a lot of food for thought in this thread, but before I try anything else I would like to comment on @Michael here.

I have gone to this location and am surprised to see old Domain Controllers that were demoted long ago. Although they have no NTDS info under them, they are still listed. Should i just delete them from here?

Replicating from each of the 3 to their other 2 completed without errors.

Yes - it is safe to delete old DCs from here. If they have no NTDS under them, it means they've been demoted as DCs.

And if your servers replicated OK manually, then that's great news :)

Thanks so can rule out DNS etc.

Ill look at the HotFix's and the service dependencies, and sophos next :)

Hey, i have been having this problem with netbook used my the children. How would i go about stopping Sophos from disabling the wireless cardsat startup? thanks

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Originally Posted by billyf

Hey, i have been having this problem with netbook used my the children. How would i go about stopping Sophos from disabling the wireless cardsat startup? thanks

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You wouldn't. It's part of it's startup checks to make sure all is safe on the computer. All you need to do it just wait for 30 seconds or so before you log on and that should all be good. Failing that, if you have a hard key method to turn the wireless card off then back on (Be it a dedicated key or switch or an Fn + Key method). It's a bit of a bug bear, but to be honest, with the latest version of Sophos (done through updates) it's been a lot less noticeable.

This might be worth a look.
Windows 7 Clients intermittently fail to apply group policy at startup

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Originally Posted by morganw

This might be worth a look.
Windows 7 Clients intermittently fail to apply group policy at startup

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Wow! thats a really useful thing to know.

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Originally Posted by morganw

This might be worth a look.
Windows 7 Clients intermittently fail to apply group policy at startup

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Well, even though it's not happened for a while, I'll set this just in case me thinks! lol .. :)