randomly falling off domain

[browolf]

Ive been asked to ask why
3 or 4 computers a day are randomly falling off the domain, for no apparent reasons..... this happened to anyone else?

[tech_guy]

Power save on NICs turned on?

[Jake]

We had a room which had machines doing that last term, during the summer we re-terminated the network points and its been fine ever since. Even though when we took the socket off the wiring looked ok, we still re-patched the points anyway

[Halfmad]

Have you tried generating new SIDs for the computers concerned? Just a thought, I've heard of all sorts happening in a local high school (not mine) where the tech was imaging but not using sysprep to regen the SID.

Worth a try, other than that I'd go with Jake's idea!

[Vegas]

Is it the same 4 every time?
What do you mean by falling off, are you having to manually re-create their accounts on the domain?

[browolf]

Is it the same 4 every time?
What do you mean by falling off, are you having to manually re-create their accounts on the domain?

on the workstation putting it in a workgroup and then back on the domain fixes it.

[departed]

what would be possible reason for this.I am having the same issues.

Falling of means account is deleted from domain,i guess

[joe90bass]

DHCP scope full?
If they've been imaged but not sysprepped (as below) Try regenerating the SIDs
Faulty wiring or wireless problems?
Faulty NICs?
I had an issue earlier this term with reserving IP addresses in a range where the leases were already out, a load of the teachers laptops wouldn't see the domain, resolved by moving the lease range to not encompass the reserved range (now why didn't I do that in the first place...)

[departed]

most of the falling of coincided with user changing pword