Running KeyMgr.dll remotely

Posted on 2012-03-30
Last Modified: 2012-06-27
As many other people have complained, we've had problems with people saving credentials when they connect through a proxy server, and then their accounts get locked out weeks later when they change their password.
We have proven that this problem can be solved by accessing KeyMgr.dll and deleting any of the saved credentials.

We have users who touch literally 100's of computers in a month, and so when their account gets locked out, trying to track down which computers they might have touched, and then log into each individually and clear the credentials by hand is an arduous task.

Question:  Is there a way to do the equivalent of running KeyMgr.dll and deleting ALL saved credentials, but to do this remotely (or even better: via batch) to computers remotely?
Question by:TomPro
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LVL 65

Accepted Solution

RobSampson earned 500 total points
ID: 37849456
Hi, add this to a logon script:
cmdkey /delete:<proxyserveraddress>

or to remove all saved credentials:
cmdkey /delete:*

This way, when anyone logs on, their credentials will be removed.  If you are not sure whether systems have cmdkey on them, copy it to a network location, and use
\\server\share\cmdkey /delete:<proxyserveraddress>



Author Comment

ID: 37874958
I like the solution of using CmdKey and will do some testing.  

Is there a way to run the /list version remotely?  For instance:  Can I create a batch that runs on the AD that would query each of the domain members one by one and return the results of a CmdKey /list for each?
I want to add the script with the delete/*, but I'd like to be able to check all of the systems before I implement the script to make sure that I'm not deleting something that should really still be there, and with some 1000 member servers, it'll take forever for me to log into each one at a time to check their listings.
LVL 65

Assisted Solution

RobSampson earned 500 total points
ID: 37879036
Hi, you can, with PSExec, but the output's not too clean.  You'd need to parse it further.  If you copy cmdkey to a network share, you can direct PSExec to run it from there, and then store the cmdkey output in another shared folder:

C:\Tools\psexec -accepteula -u domain\administrator -p password \\REMOTEPC cmd /c \\server\share\cmdkey /list > \\server\share\CmdKey\cmdkeyoutput.txt

Or you could just use this in a logon script
cmdkey /delete:<proxyserveraddress>

so that you only affect the credentials for that one resource.



Author Closing Comment

ID: 38129631
RobSampson had it right.  Thanks VERY much for all your help.  I apologize for the delay in closing.

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