Blocking sender/deleting email fails Tuesday 5. January 2021 14:00:00
Office 365 users may experience when blocking an email sender, after reporting an email, that the client hangs in a "Deleting email" state, while the email does not get deleted. We are currently investigating this issue.
We have identified the cause for this error, and have rolled out a fix. Users may have been impacted by this since 29 December. We apologize for any inconvenience this may have caused.