Windows 7 local login password clears itself

Hi, I have a laptop that has the administrator login disabled.  I have created another local administrator name say "Admin2" and I am able to login to Admin2 without an issue... however if I connect to the network and login with my domain username on the network, then disconnect from the network and try to login using Admin2 again locally it says that I have the wrong username and password.  I am using the correct format [computer name\username] for the username. The only way I can make Admin2 work again is to login with my domain username and reset the password for Admin2.  Admin2 is also the name for a Universal security group on the network, however I don't think this would be causing an issue.  Any thoughts on how I can stop Admin2 from losing it's credentials?
vjstechAsked:
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Scott GorcesterCTOCommented:
Seems very odd, I would not recommend re-using names in AD so no groups with the same names as users, AD is a database and this could be a problem. Also might suggest creating a new local user account and granting local admin rights and then see if its stable. Delete the local admin2 account.

Scott
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MikeIT ManagerCommented:
Delete the admin2 account and create an account with a name like 'localuser'.  That's usually what I use for the local login when 'admin' is not an option.  Assign that account local administrative rights and then try joining it to the domain and see if that works.
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JohnBusiness Consultant (Owner)Commented:
If you have trouble with a new admin user as suggested above, consider scanning for viruses and malware followed by a scan with Malwarebytes.

I do not have user name lose their credentials. Yes, strange.
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McKnifeCommented:
Setup auditing for account management events and you'll see what is going on.
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chanmesaCommented:
if you try to log on in the local user you can type .\user and password
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NVITEnd-user supportCommented:
So, doing this solves your issue? i.e. that's the only way Admin2 can logon? Interesting.
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vjstechAuthor Commented:
Well, probably not as a whole... I reset the password again after logging in using my domain name to fix the problem temporarily... then logged in locally using the .\admin2 format and it worked... after that I logged out and then used computername\admin2 and it worked... and I have not been able to break it again since... and have not changed anything else... don't know the exact solution however I know it is working after using the alternative format... not that I think that was the actual solution.  I will imagine that after posting this the problem will resurface at some point to prove nothing has been solved.  I probably marked this as a solution when I should not have.
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McKnifeCommented:
In any case, setup account management auditing, so next time you'll be able to see who or what changes the password.
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vjstechAuthor Commented:
Thanks... will do.
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