Network Share Suddenly Asks for Username and Password.

Need help with a network share disconnect issue.

We have some workstations running Windows XP Pro SP2.  They are connecting to a printer on another Windows XP SP2 computer working as a peer-to-peer server, and can normally use the printer fine.

But suddenly and without warning, and with no detectable pattern, the printer on the workstation will go from status of READY to status of ACCESS DENIED.  And users cannot print from the workstation, instead getting an error that the printer is not installed.

If I delete the printer on the workstation and try to reinstall, I am asked for a username and password to connect to the printer on the peer-to-peer server.  There is none, that printer server is using simple file sharing.

If I reboot the workstation INSTEAD OF deleting the printer and trying to re-add it, the problem is gone.

Any thoughts on what might be happening?
sqstultzAsked:
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Jared LukerCommented:
Is the accounts that your logging into both machines identical (user name and password)?

I would check to see if the account is getting locked out on the print server computer.  That's what it sounds like to me.
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johnb6767Commented:
On the machine with  the problems connecting to the other.....

start>run>control userpasswords2>Advanced>Manage Passwords, and look to see if the Printer Server PC name is listed... It doesnt explain why the rebooting helps though....
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sqstultzAuthor Commented:
But if I'm using simple file sharing, I don't need all workstation users to be users on the printer server too, correct?  I added them just in case, but today we have one more incident of this, and that's with usernames on the printer server with the same passwords.
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sqstultzAuthor Commented:
johnb6767,

No, the Manage Password list is blank.  But that's normal since the printer server is set to "simple file sharing," correct?  And why, even though the printer server is set to "simple file sharing" would I even be prompted for a username and password as this problem is occurring?

I tried entering the administrator username and password today when this problem occurred again, and it did reconnect me to the printer (for now), but again, why would it be asking me for login credentials when the server is set to "simple file sharing?"
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johnb6767Commented:
Might still have permissions in place, that are cached....

Try resetting the passwords of the account you are trying to access, on the print server....
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sqstultzAuthor Commented:
Okay, we've deleted and re-created all ten public user accounts on the printer server, now we'll need to wait up to a day for the error to re-appear.  We'll see what happens next...
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sqstultzAuthor Commented:
Between Friday afternoon and Monday afternoon, we've had one more occurrence of this issue.  Frequency seems to be down, but why?  But I suppose with one more "access denied" on a workstation means something is still wrong.  Ideas?
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sqstultzAuthor Commented:
With no more activity on my question, I think I'll close the question as it stands.  The director of our facility has decided to call in a local IT firm to deal with the issue on-site.  Thanks to everyone here for the ideas, as always I appreciate the feedback and assistance.
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