During an attempt to sign in, if Windows displays the Please wait for the User Profile Service message for a long time, say 5 minutes, then that post will help you ...

I can't think of what would cause it to destroy the user profile other than some kind of hardware issue or a software issue that resulted in deleted or damaged files. Maybe some kind of problem where ...

Nothing short of normal Windows updates have been installed recently, and I've no idea how long this problem has existed, as my standard user account along with the admin account still work just fine.

The connection to the Profile Service cannot be established. Try again later. This error is mostly reported on PC. However, it can also occur on your Xbox consoles ...