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5723 NETLOGON: Session could not be created

We are using SBS 2008 (primary DC) and Server 2008 (backup DC) with about 20 XP and W7 clients. Yesterday morning all clients encountered login problems (5805 NETLOGON: The session setup from the computer [DOMAINCOMPUTER] failed to authenticate. The following error occurred: Access denied).

We reintegrated all clients into the domain (put into workgroup, reboot, put into domain, reboot). Login with severals accounts o all clients was successful, but after about 30 minutes the problem reappeared for new logins with:
1.  5723 NETLOGON: Session could not be created ...             followed by
2.  5805 NETLOGON: The session setup ... (see above).

What can cause these problems? All clients are listed in the AD.

Many thanks
sg08234


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Glen Knight
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Access denied normally indicates a time issue.

Is the time different on the SBS server to what it is on the client machines?

It could also be a DNS issue.  Can you post IPCONFIG /ALL from the SBS server and one of the clients please?
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ASKER

Thanks so far --> I'll check on monday. SBS time is correct. I assume client times to be correct too.

What ist the idea behing asking for IP-settings (those have not been changed and worked fine for 3 months)?

sg08234
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Sorry for late feedback: After the weekend the problem did come up again. So I assume that DC replication of "sites and computers" did not work properly before and succeeded over weekend.

Many thanks for you assistance. I only spend 100 points as none of your answers really hit the point.

sg08234