Oops Something went wrong. Cannot sign in to Microsoft account.

Hello, I'm using Windows 10 Pro version 64 bit and recently I'm aware that my taskbar and start menu doesn't work and I tired creating a new local account and it solve my problems. But now I have another question to ask about this, first I cannot sign into my Microsoft account at the Settings > Accounts. After typing in my email and password, Windows ask for old password and so I provided the password yet it says "Oops something went wrong. Whatever happened it was probably our fault."

Although creating an account does fix it , I was wondering since I created an account, I need to copy all my stuff like my desktop icons and so on to another account right? All these files wont be sync correct? So data like "AppData" , Itunes Music and so on will not be at the new account if I didn't transfer them to another account?

Is there any way to transfer all data to another account or is there any fixes for the taskbar and start menu?
I tried DISM and sfc /scannow , everything is not working, it has error saying iIndows Resource Protection c could not perform the requested operation.

Thanks in advance.

Bump, anyone?

Decided to format the drive. Problem solve. Thanks.