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Access denied to a mapped drive windows XP

Posted on 2010-08-25
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Last Modified: 2012-05-10
I've got a user who is getting access denied to their mapped home drive on their laptop.  In "My Computer" when you double click the mapped drive you get an "access denied" message.  You can however right click the drive and press "explore" and it will open.  You can also click on "my documents" which redirects to the same share.  So obviously permissions are fine, i've checked and double checked these.  I tried reinstalling XP, same problem.  I made the user a local admin and a domain admin and it didn't resolve it either.  The same thing also happened on another laptop, so it suggests to me it's an account problem, but I wouldn't know what.   I've never seen anything like this before, I am baffled.
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Question by:clevelandfire
7 Comments
 
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by:GO-87
ID: 33519337
Is this an intermittent problem, (e.g. the network drive is getting disconnected after inactivity)?
or is it consistent / persistant?
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by:Hanntho
ID: 33519358
Check that your users hasn't got conflicting rights, ie member of guests (with full restrictions all round) in addition to being a member of administrators (with complete rights all round)
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Author Comment

by:clevelandfire
ID: 33519416
Its a persistant problem.

As a rule I don't like using deny rights, there are no conficts.
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Accepted Solution

by:
clevelandfire earned 0 total points
ID: 33519596
I really can't explain it but.

Backed up his files.
Deleted the folder.
Recreated it.
Move files back.
Logged in - Denied.

Then

Backed up files
deleted the folder
logged user in
created the folder
mapped it
worked.
Moved files back in
still worked
Logged off and on
Still worked.

So I can't explain why, but it works.  Same files, same permissions, same folder names.
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by:woolnoir
ID: 33519610
is there an autorun file on the network drive ? maybe hidden. The only difference i can see between double clicking a drive and exploring would be the invocation of the autorun file. Plucking at straws here, but check it out.
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by:woolnoir
ID: 33519624
interesting - worth doing a check on whatever server the mapped drive is on

There are a few trojans that employ this method...

Check these links for more info on this:

http://vil.nai.com/vil/content/v_141387.htm

http://www.sophos.com/virusinfo/analyses/trojbdoordij.html
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Author Comment

by:clevelandfire
ID: 33519919
woolnoir: Yes there was an autorun.inf hidden in there.  So i moved it back in to test, and it did nothing.  So no idea if it was causing the error before and not now.  I deleted it just incase.

WHen the user returns from his holiday, i'll be scanning any removeable media he has for a virus.
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