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Denial of Service?

By hainesj ·
Recently we are having users logon to our NT 4.0 network, to get a message of "password not valid", regardless of who logs on. Deleleting the pwl file from Windows does not result in a request for a new password. Servers and print service are denied, but internet access and mail are still available. We find no common links, yet. Our virus files are up to date. Only one of the affected workstations uses Outlook, and none use IE5. W e use Netscape 4.6 and above for our e-mail client. We have reloaded windows, tried deleting network services and reinstalling, deleted the user from the server and re-opeded the account, all with the same result. Thursday there were 3 stations with this problem, now 9 (monday). Any ideas?

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Denial of Service?

by calves In reply to Denial of Service?

Can you reboot your server, or did you?
Did you install anything new to the server and forgot to re-install the SP?
Did try a syncronization of the network (if the above failed and you have BDCs)?

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Denial of Service?

by hainesj In reply to Denial of Service?
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Denial of Service?

by Don Christner In reply to Denial of Service?

From your description, it sounds like your users have Win9X machines that log onto an NT Server. This would explain why deleting the PWL file from the Win9X machine does not work. The users would actually be verified on the NT Server. I also suspect that you have a separate NT Server that runs Exchange, which is why Internet and Email still work.

Are all users on a particular machine prevented from logging on, or are particular users prevented from logging on all machines?
Instead of rating these answers, select answer this question. That way, you can post more info. to this question without closing the thread.

Thanks,
Don

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Denial of Service?

by hainesj In reply to Denial of Service?
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Denial of Service?

by bblunden In reply to Denial of Service?

It sounds like it might be a NT User rights issue. Go to your server, User Manager for Domains - Policies - Account - and then make sure your users have rights to "Log On Locally"

I have seen this happen before.

Good luck,
Bill Blunden

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Denial of Service?

by hainesj In reply to Denial of Service?
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Denial of Service?

by tlippert In reply to Denial of Service?

If you have reset the administrators password on the server recently you may need to tell exchange server the new password. If is it not exchange try another server through the corresponding microsoft management console MMC.

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Denial of Service?

by hainesj In reply to Denial of Service?
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Denial of Service?

by Lee V. In reply to Denial of Service?

We had this issue at work recently. Microsoft's solution was to turn off the license logging service on the domain controller (NT Server) that the users were authenticating against. There was a small bug in the service that would run out of licenses for Win9X machines and wouldn't allow more than a certain number of Win9x users to log on. I'm not sure if the license logger (for Client Access License tracking compliance) was fixed in the latest service pack or not.

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Denial of Service?

by hainesj In reply to Denial of Service?

All these sound close, but I was able to solve the problem. In the registry, I went to local machine, network, logon, and changed the value of lmlogon back to 0 and everything worked fine! Go figure..
Jon

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