Status Page

O365 - Email

2020-08-31	Status	Description
08:50 AM		EXCHANGE ONLINE SERVICE ALERT Title: Approximately 3% of users may be unable to sign in to the Outlook mobile app User Impact: Users may be unable to sign in to the Outlook mobile app. More info: Users may also be unable to see profile images and may be unable to update images. Current status: Service Provider is analyzing system error logs to determine possible underlying causes of impact and formulate a mitigation strategy. Scope of impact: Impacted is limited to approximately 3% of users serviced by the affected infrastructure.

2020-08-27	Status	Description
08:55 AM		EXCHANGE ONLINE SERVICE ALERT Any user can't access some archived mailboxes from the Outlook desktop client or Outlook on the web Service Restored

2020-08-26	Status	Description
10:41 AM		EXCHANGE ONLINE SERVICE ALERT Title: Any user can't access some archived mailboxes from the Outlook desktop client or Outlook on the web User Impact: Users may be unable to access some archived mailboxes from the Outlook desktop client or Outlook on the web. Current status: Service Provider has completed the development of a code fix and it's been deployed to the affected archived mailboxes. Root cause: A recent feature update introduced a code issue that has resulted in unexpected access issues to some archived mailboxes.

2020-08-25	Status	Description
08:00 PM		EXCHANGE ONLINE SERVICE ALERT Title: A very limited number of users may intermittently be unable to access Exchange Online via any connection method User Impact: Users may be unable to access Exchange Online via any connection method. Current status: Service provider is continuing to analyze system logs for more information on what is causing the issue. Scope of impact: This issue could potentially affect a very limited number of your users intermittently if they are routed through the affected infrastructure. For most customers, it's unlikely that many users would report impact related to this event. Start time: Tuesday, August 25, 2020, at 8:00 PM ADT
05:30 PM		EXCHANGE ONLINE SERVICE ALERT Service Restored Details Title: Any user with end-user spam notification (ESN) policies using specific conditions seeing unexpected delivery results User Impact: Users with an ESN policy scoped by a rule using specific conditions may have seen unexpected delivery results. More info: Please note that this problem only occurred when ESN policies were scoped to specific conditions. The resulting impact was generally minimal, and most users wouldn’t have experienced impact. The affected conditions were "SentToMemberOf" and "ExceptIfSentToMemberOf". Users leveraging the conditions either wouldn’t receive quarantine notifications or would have unexpectedly received them. Removing the rule that leveraged either of the affected conditions mitigated the problem and allowed users to receive the expected quarantine notifications. Further, moving group conditions to either a domain or specific recipients provided a better experience until the issue was resolved. Final Status: Both solutions have been fully deployed and we’ve confirmed that impact has been remediated. Scope of impact: Any user with a spam filtering policy scoped with a "SentToMemberOf" or “ExceptIfSentToMemberOf" condition may have been affected. Start time: Monday, March 23, 2020, at 7:00 PM UTC End time: Tuesday, August 25, 2020, at 8:30 PM UTC Root cause: The code to support spam filtering policies that were scoped to the "SentToMemberOf" and “ExceptIfSentToMemberOf” conditions wasn't fully implemented before the option to use the affected conditions was made available. Further, the affected policies operated under conditions that resulted in the policies either being ignored or generating false positive results.
05:30 PM		EXCHANGE ONLINE SERVICE ALERT Service Restored Details Title: Any user or admin may experience various issues intermittently when using the service User Impact: Users or admins may have experienced various issues intermittently when using the service. More info: The following entails the affected impact scenarios: - Users may have experienced intermittent issues when sending or receiving emails via any connection method. Affected users may have also seen the following error message: "This message could not be sent. Your server administrator had limited the number of items you could open simultaneously." Users and admins who encounter these issues may have had to re-attempt these actions to complete the process. Final status: We confirmed that the deployment has complete and validated via telemetry that the issue has been resolved. Scope of impact: This issue could have potentially affected any of your users intermittently when attempting to send or receive emails, or admins attempting to review or export logging results from the Exchange admin audit log. Start time: Friday, July 17, 2020, at 12:00 PM UTC End time: Tuesday, August 25, 2020, at 8:30 PM UTC Root cause: A recent service update introduced a code issue that was causing an unexpected increase in resource consumption on our infrastructure, resulting in impact.