Symptom:
User experiences a sign in failure with error 80048820.
Cause:
Invalid characters in the first name of the user’s profile
Steps:
Change the first name in the user’s profile
1.
Go to
http://account.live.com/
2.
Sign in with the account in question
3.
Click ‘Registered information’ link
4.
Click the ‘Change’ link next to your name
5.
Change the First name to something appropriate with no special characters or the ‘&’ symbol.
6.
Click ‘Save’
7.
Attempt to Sign in with the application that was creating the error.
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