Email and Calendar Visibility in M365 Outlook

Here is the most recent update from Microsoft:

"The deployment of our fix is progressing as expected and we continue to anticipate that it'll complete on Wednesday, May 12, 2021 by 3:00 AM UTC."

This update from Microsoft:

"We’ve identified the root cause and are applying a fix, which will reach affected users over the next 3 to 4 hours. Users will need to restart the Outlook client to apply the fix after it's received. We expect to restore service to affected users by May 12, 2021, at 3:00 AM UTC."

We'll continue watching for updates from Microsoft as they work to resolve this issue.

Microsoft is investigating an issue with email message visibility in Outlook. Outlook on the web appears to be unaffected. More details can be found under EX255650 in the MS admin app - https://aka.ms/M365AdminMobile or on their official Twitter Feed at https://twitter.com/MSFT365Status. EMPIST will continue to monitor and provide updates as they are available.