I'm unable to change my (admin) password in Windows 8 or to disable password login altogether.
Here's what I tried so far:
Go to the PC-Settings>User in the Metro UI. If I try to change the password there I get an error message: Something went wrong, please log out and back in. Doing so does not help, I get the same message again. And toggling whether to use a password for login does nothing as well
In the control panel>login information my account is listed under generic login. Editing the password here does nothing.
Disabling the password via Win+r 'netplwiz' does nothing.
Note that the password I create during the Windows 8 installation still works for logging in.