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Exchange Issue: EX220140

Now Resolved

Presented for your reference, we are aware that Microsoft are having issues that impact how Outlook Desktop App interacts with Exchange.

Workaround: IF your team members experience issues with the Outlook Desktop App they can use Outlook Online:

From Microsoft: Some users may be unable to send emails from the Desktop Application

User Impact: Users may be unable to send emails from the Outlook desktop client.
More info: Affected users may see the following error message: “This message could not be sent. Your server administrator has limited the number of items you can open simultaneously.”
This issue appears to be limited to the Outlook desktop client only.
Users who can leverage Outlook on the web may use that connection method as a workaround.
Current status: We’ve confirmed the service update contained a code issue, resulting in impact. We’ve developed a fix which is currently undergoing validation. We expect to initiate deployment within the next 24 hours, at which point we can determine a mitigation timeline.
Scope of impact: Your organization is (Solve Edit “may be”) affected by this event, and some users leveraging the Outlook desktop client may be affected by this issue.
Start time: Friday, July 17, 2020, 10:00 PM (12:00 PM UTC)
Root cause: A recent service update introduced a code issue that’s causing an unexpected increase in resource consumption on our infrastructure, resulting in impact.
Microsoft are projecting their next update by: Tuesday, August 18, 2020, 8:00 AM (8/17/2020, 10:00 PM UTC)
Now Resolved

We are not planning to post further TEXT MESSAGE updates on this matter at this stage.
We hope this will be resolved before Monday though in light of Microsoft not planning to update this until Tuesday then it’s still possible to see the tail end of this impacting normal business processes early into the week.
This is a manually updated page, Microsoft’s status updates won’t be reflected in real time, we will update this as we see MSFT status changes.
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