Remote Desktop "the username or password is incorrect" error?

Randy 1 Reputation point

Suddenly, I was not able to do RD to user1 and found out the PC (win7) I am trying to RD was power off.
I still cannot RD to user1 after started the PC with "the username or password is incorrect" error.
I can RD to user2.

-Verified the password on user1 by physically logging-in and the password was accepted.
-Deleted user2 to directly log in to user1: Failed with "the username or password is incorrect".
-Set up user2 again and was able to RD to user2 but not user1.
-Changed passwords for user1 and user2: user2 can RD,user1 still cannot RD.

Please recommend solution, Thank you.

Remote Desktop
Remote Desktop
A Microsoft app that connects remotely to computers and to virtual apps and desktops.
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