Office 365 Monitoring - Service Outages

Read the latest updates, root causes, and resolutions on Microsoft Office 365 service outages.

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Microsoft Outages

Microsoft Services Access Delays

SharePoint Online and OneDrive for Business Outage - September 29, 2022

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ENow Software

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.

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Microsoft 365 Services - Outages in EMEA (August 10, 2022)

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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."

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Exchange Online & Outlook.com Services

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ENow Software

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.

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Microsoft 365 Monitoring: Teams Service Incident (April 28, 2022)

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ENow Software

On April 28, 2022, at ~10:04 AM EST, Microsoft communicated via tweet (@MSFT365status) that they were investigating an issue in which users were unable to make or receive calls using Microsoft Teams.

For IT pros or system admins with Microsoft admin center access, the incident number to reference the issue was TM365276.  This service incident comes 1 day after a minor service incident involving Microsoft Sway.

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