reset local security policy option

Posted on 2010-08-20
Medium Priority
Last Modified: 2013-11-29
I'm running windows 7 professional, 64 bit, and as you all know there's the security policies known as local security policy under this lies a list of network security policies one of them is called Lan Manager Authentication Level, on a fresh install it is set to not defined, is there anyway I can return to this state, I changed it to NTLM2, and I would like to have it back at "not defined"

Question by:ashrafkadry
  • 2
LVL 101

Accepted Solution

John Hurst earned 2000 total points
ID: 33490081
Take a look at http://support.microsoft.com/kb/239869 re: NTLM2 authentication. To implement NTLM2, you add a key  To remove NTLM2 authentication, you should be able to just remove the key. Work carefully, locate the specific key referred to in the article, check its contents and then delete the key.  ... Thinkpads_User

Author Comment

ID: 33491885
Thank you thinkpad_user for your answer it solved the problem completely. But if you allow to me correct the "key" part to "regword" that would make it easier for people who might watch this solution. Simply delete the LM compatibility regword value, the one in the right pane, and that's it, your Network Security: Lan Manager Authentication Level is back to "not defined".
Again thank you so much for your help.
LVL 101

Expert Comment

by:John Hurst
ID: 33491908
Thank you. Yes - either way will work. Thanks again. .. .Thinkpads_User

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