Temporary User Profile:
A temporary profile is created each time that an error condition prevents the user's profile from loading. Temporary profiles are deleted at the end of each session, and changes made by the user to desktop settings and files are lost when the user logs off.
If a user signs in to their account and gets 'We can't sign into your account' message and 'You've been signed in with a temporary profile' notification message below, then that user has been signed in to a temporary profile (eg: C:\Users\TEMP) instead of the profile from their C:\Users\<user-name> profile folder. Any changes that the user makes to the temporary profile are lost after signing-out.
