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Exchange Online mailboxes unavailable

August 18, 2025 at 4:12 PM UTC

Microsoft

Resolved after 5h 31m August 18, 2025 at 9:43 PM UTC

Issue Resolved | 05:43pm Central - Microsoft reports that the issue is now resolved. The Atelic Technology Services Department appreciates your patience and understanding while working through this service outage. If the issue is still occurring, please contact the Technology Services Department. This will be the last update unless the issue recurs.

Vendor Implementing Fix | 03:48pm Central - Microsoft has identified the root cause of the issue and continues to implement a fix. The Atelic Technology Services Department has not been able to validate this report but are monitoring further updates from Microsoft. End user disruption may occur for this issue.

Vendor Implementing Fix | 01:46pm Central - Microsoft has identified the root cause of the issue and is in process of implementing a fix. The Atelic Technology Services Department has not been able to validate this report but are monitoring further updates from Microsoft. End user disruption may occur for this issue.

Vendor Investigating | 12:49pm Central - Microsoft continues to investigate the issue. Microsoft reports that users are unable to access their Exchange Online mailboxes through all connection methods. The Atelic Technology Services Department has not been able to validate this report but are monitoring further updates from Microsoft. End user disruption may occur for this issue.

Report Received | 12:12pm Central - We are investigating a potential issue that might affect the uptime of one of our services. Microsoft reports that users are unable to access their Exchange Online mailboxes through all connection methods. The Atelic Technology Services Department has not been able to validate this report and are monitoring further updates from Microsoft. End user disruption may occur for this issue.

Last updated: August 20, 2025 at 7:17 PM UTC