Microsoft Exchange Online Service Advisory
Microsoft reported an active Exchange Online service degradation that began at approximately 11:08AM EDT on 8/31/26. This is a Microsoft service incident (EX1464935) and is not related to ProCirrus infrastructure.
As of 9/2/26 at 4:04PM EDT, most services have recovered. The remaining issues are:
- Users can't download email message attachments through any Exchange Online connection method.
- Users may be unable to sign in to Outlook on the web.
For current information and inpacted Microsoft services for this incident, please refer to Microsoft's Service Health Status page.
