Another time I was seeing this error message: The user name or password is incorrect (Exception from HRESULT: 0x8007052E).
Strange thing is when I enter account information again, everything seems to be okay. "The connection was successfully verified."
After closing the task sequence and do Verify and Test connection again, same error message as above!
I closed the ConfigMgr console, created a new task sequence, did a reboot of the Primary Site server, nothing seems to solve the issue. When looking at another step in the task sequence (join domain credentials) it goes wrong also. "The user name or password is incorrect." and 0x8007052E error message.
Very strange however that account details are wrong, while I have filled in domain and account details before successfully. For it seems ConfigMgr is not saving my domain and account information in the task sequence(s), while other properties are going fine.
Maybe it's better if Verify and Test connection button can be pressed only once, and is greyed out after that. This prevents mistakes!
Update: Kenny Buntinx has posted: It is certainly not a bug, but a security decision. All “secrets” including all passwords are encrypted in delivery and by client using Windows data protection API.
Update: Nicholas Jones is right in this post: SCCM 2012 Network Access Account password problem. Verify the password only once, and you should have no issues.