Advisory information Title: Users can't add shared mailboxes via Outlook mobile apps ID: EX284109
Status Service Degradation
Details Title: Users can't add shared mailboxes via Outlook mobile apps
User Impact: Users are unable to add shared mailboxes via Outlook mobile apps.
More info: Outlook desktop and Outlook on the web are unaffected.
Users will encounter the following error when attempting to add shared mailboxes via Outlook mobile apps: "Authentication Failed: That didn't work. You may not have the right permissions to add this mailbox or the mailbox doesn't exist." Current status: We're reviewing recent service updates to isolate the source of the problem and determine the most expedient mitigation approach.
Scope of impact: Any user attempting to add shared mailboxes via the Outlook mobile apps may be impacted.
Next update by: Thursday, September 9, 2021, at 6:30 PM UTC