Windows 10: Stuck in Recovery Environment; password is not being accepted

I just wanted to do a quick update + restart to my desktop PC today but when I did I got stuck in the recovery environment. It seems I'm stuck in it and can't get back to my normal Windows I tried launching in safe mode too.Possible causes?Windows update problemI installed many drivers a few days ago via Driver Booster 10 and only restarted now I had low space ~3GB left on my boot driveMemory issues I had a bit ago BSODs I had related to MEMORY_MANAGEMENT error code, if relevantMy immediate thoughts was to use the option to uninstall the latest Windows update but when I try, it prompts m

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Windows Recovery Environment Does Not Accept Passwords

When accessing a tool like Command Prompt or System Restore in Windows Recovery Environment, I click my user name, type in my password, and then an error message says "The password is incorrect". This is because I sign into my PC using my Microsoft Account,
which Windows Recovery Environment does not accept passwords at all even my Microsoft Account password is correct. Has this change happened on Windows 10 version 1903?

 

Windows does not accept login password from Recovery Environment

Windows 10 won't accept my login password from the Recovery Environment. That's the blue screen with options such as Repair Installation.

This is despite Windows accepting the same password to log me into the OS from the main login screen at system startup.

I am using the same account to login into the Recovery Environment.

Can anyone advise as to the cause of this error and how to fix it without Resetting the OS install?

 

Windows Recovery Environment password

When booting to to the WinRE Advanced Startup from the installed Windows it requires you to choose an account that is an administrator, then supply its password even when the password is blank. For a blank password is should accept just clicking on Continue. This behaviour only occurs if you are booting from the WinRE of the installed system, as it requires you to sign into the system before proceeding. No account or password is required when booting from a Recovery USB.







That is normal, and it should accept your blank password, but I did have one system on my test machine where it refused to accept any correct password...

...unfortunately I could not find out why or how to fix it, so I rebuilt the system.

Multiple System Images using Backup & Restore - advice?