Office 365 Monitoring - Service Outages

On November 3, 2022, at ~12:16 PM ET, Microsoft communicated via tweet (@MSFT365status) that they identified an issue within their backend infrastructure that could be causing downstream impact to multiple services across Microsoft.

For IT professionals and system admins with Microsoft admin center access, the issue numbers are MO455301.

On September 29, 2022, at ~3:48 PM ET, Microsoft communicated via tweet (@MSFT365status) that they were investigating an investigating an issue preventing users in North American from accessing SharePoint Online and OneDrive for Business content.

For IT professionals and system admins with Microsoft admin center access, the issue numbers are SP440666 and OD440667.

We're investigating an issue preventing users in North American from accessing SharePoint Online and OneDrive for Business content. Please refer to SP440666 and OD440667 in the Microsoft 365 admin center for further details.

— Microsoft 365 Status (@MSFT365Status) September 29, 2022

On August 10, 2022, at ~8:44AM EST, Microsoft communicated via tweet (@MSFT365status) that they're investigating an issue where some users in the EMEA region are unable to connect to some Microsoft 365 services.

For IT pros or system admins, additional information can be found under SI MO411804 in the admin center.

Reports indicated this is due to a Cisco Meraki firewall Intrusion Detection and Prevention (IDR) false positive blocking Microsoft 365 connections with "Microsoft Windows IIS denial-of-service attempt" alerts. According to a Cisco Meraki employee, "We would like to make you aware of a vulnerability reported by Microsoft CVE-2022-35748 , triggering SNORT rule 1-60381".

The employee also stated, "Our recommendation at this time is to follow Microsoft's guidance and ensure that your Servers, OS and software are up to date with the latest security patches."

On July 28, 2022, at ~12:40PM EST, Microsoft communicated via tweet (@MSFT365status) that they've received reports from some admins in North America that they're unable to access the Microsoft 365 admin center.

For IT pros or system admins, additional information can be found under MO406459 in the Microsoft 365 admin center.

On July 20, 2022, at ~9:47 PM EST, Microsoft communicated via tweet (@MSFT365status) that they were investigating reports of users being unable to access Microsoft Teams or leverage any features.

For IT pros or system admins, updates can be found on Service Health Dashboard via TM402718.

On July 18, 2022, at ~9:55 AM EST, Microsoft communicated via tweet (@MSFT365status) that they were investigating an issue with users accessing or experiencing degraded functionality when using Exchange Online and outlook.com services. 

For IT pros or system admins with Microsoft admin center access, the incident number for further details is EX401976 and OL401977 in the admin center.

On June 21, 2022, at ~7:54 AM EST, Microsoft communicated via tweet (@MSFT365status) that they were investigating an issue where users from the India region are unable to connect to some Microsoft 365 services. 

For IT pros or system admins with Microsoft admin center access, the incident number for further details is SI MO400684 in the admin center.

On June 21, 2022, at ~5:52 AM EST, Microsoft communicated via tweet (@MSFT365status) that they were investigating an issue when accessing the Exchange Online service. 

For IT pros or system admins with Microsoft admin center access, the incident number for further details is EX394347 in the admin center.

On May 23, 2022, at ~8:08 AM EST, Microsoft communicated via tweet (@MSFT365status) that they were investigating an issue with accessing the Exchange admin center (EAC)

For IT pros or system admins with Microsoft admin center access, the incident number for further details is EX383634 in the admin center.

On May 19, 2022, at ~10:17 AM EST, Microsoft communicated via tweet (@MSFT365status) that they were investigating an issue with accessing the Exchange admin center (EAC)

For IT pros or system admins with Microsoft admin center access, the incident number for further details is EX382252 in the admin center.