Unable to link Xbox Account - "Provider did not accept user authorization"

Users may encounter the error message "Provider did not accept user authorization" when attempting to connect an Xbox account with a Battle.net account. This error occurs in the following scenarios:

1. The Microsoft account used on your Xbox does not have an associated Xbox Live account. 
2. The Microsoft account used is a Microsoft child account or has Parental Controls enabled. Child accounts with Parental Controls are not supported for linking. 

If you are unsure if your account meets one of these criteria, you can contact Xbox Support for further assistance identifying which scenario you may be experiencing.