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HarperBen

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SBS 2003 - Clients Lose Connection @ approx 6:00 every day.

I have recently put in a new dell server with SBS 2003.
For some unknown reason, Every workstation machine on my network will experience some form of connectivity or permissions loss every night at approx 6:00.

Workstations can sometimes still contact the server, but at an alarmingly slow rate, or sometimes not at all.
Any Ideas, why allways at the same time?

Thanks
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brakk0

Check the event logs on the server and find out what's happening at that time. Make sure your switch is on a UPS and isn't losing power.
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Its all on UPS.
Im going to clear all my logs.
I need to see what logs are occuring daily at the problematic time, But theres to much to wade through.
Ill leave it a few days and see whats happenig everyday @ 6:00
It is in your SBS setup.  You probably have not set the logins to be permanent or not expire.  SBS has some ridiculous defaults on login duration, DHCP renewals, and timings that don't make sense.  Without taking many pages to walk you through all screens (I don't have SBS in front of me anyway), just explore all the user login, permissions, and expiry time and renewal settings, even on DHCP leases -- you will find one set to 6.00 p.m. every day.  So set it to NEVER expire, and the problem goes away, as long as you can find it!
I agree with sciwriter, it sure sounds like the DHCP lease expire.  Although Time To Live could also be coming from your ISP.

Check upstream and downstream with:

dig <any relevant hostname.domain.type or IP Address within your network>

The first nubmer should be the time to live.  Otherwise, try to find your own DNS cache, DHCP Administrator, or whatever, if you have your own name servers and dhcp servers.
Thanks,
I have gone and checked.
my DHCP lease durations are unlimited
and user accoutns also not to expire + login times unrestricted.

Not sure if time to live is issue
Nope, it is a settings issue, for certain.  Why not search the registry for 6.00 pm -- or 18:00 -- to see if that text string jumps out.  It probably won't, knowing MS, they will hex code it in the registry -- of course, just to make it that much harder to find.  After all, why make it easy?

Also search all the docs for "time"  -- you will eventually find it.
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GinEric

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