If your EWS applications stopped working and you are looking for a quick relief, please see Exchange Online EWS application stopped working? Do this. | Microsoft Community Hub. Re-enabling EWS is pos...
Updated Oct 27, 2026
Version 21.0
Blog Post
Just as a heads up, some M365 managers from other organisations that I'm in a mailing list with have been reporting issues with the EWS report, no new data was being reported since 30/08/2026, I also saw this in our environment.
A Microsoft support call was raised and newer data is now being reported, however people are still reporting gaps. In our EWS report ran yesterday I've lost a lot of calls that were previously reported on 30/08/2026 and now have a considerably larger amount of calls than I would normally expect being reported on 06/09/2026, there are no other call's reported in September, only on 06/09/2026.
It looks like the report may be aggregating calls over a longer period of multiple days into a single day, 06/09/2026 in our case.
This may not be the case, but there does appear to have been an issue with the EWS report and I'm not convinced it's currently reporting correctly.
The report is aggregated stats for the week ending on Sunday by design. Also, I've found it's generally not available until Wednesday morning US time, so it's essentially lagging any retired applications by a week and a half by the time you can get a report (any activity on the Monday from 10 days prior to Wednesday will show on the report as current activity).
- Greg Taylor - EXCHANGE
Microsoft
Chad_C is spot on. owainwtb the data is weekly, and aggregated. As the learn/docs pages for the report states. Exchange Web Services (EWS) Usage Report - Microsoft 365 admin | Microsoft Learn
Note
Usage data is collected and aggregated weekly, not daily. It can take up to 10 days for usage to show in the report.
