Microsoft Teams outage also pulls down multiple Microsoft 365 services

On Thursday, the Microsoft Teams outage has also taken down multiple Microsoft 365 services with Teams integration, including Exchange Online, Windows 365, and Office Online.

“We’ve received reports of users being unable to access Microsoft Teams or leverage any features. We’re investigating the issue and further updates can be found in your Service Health Dashboard via TM402718,” the company said on its official Microsoft 365 Status Twitter account.

We've received reports of users being unable to access Microsoft Teams or leverage any features. We're investigating the issue and further updates can be found in your Service Health Dashboard via TM402718.

— Microsoft 365 Status (@MSFT365Status) July 21, 2022

Two hours later, Redmond said that the issue causing the connection problems was a recent deployment that featured a broken connection to an internal storage service.

However, Teams was not the only product affected by the outage since users also started reporting failures to connect to various Microsoft 365 services.

Microsoft confirms the issues saying that the subsequent Microsoft 365 outage only impacted services that had come with Teams integration.

“We’ve identified downstream impact to multiple Microsoft 365 services with Teams integration, such as Microsoft Word, Office Online, and SharePoint Online,” Microsoft said as per Bleeping Computer.

According to Bleeping Computer, As the company further detailed on its Microsoft 365 Service health status page, affected customers experienced issues with one or more of the following services:

• Microsoft Teams (Access, chat, and meetings)
• Exchange Online (Delays sending mail)
• Microsoft 365 Admin center (Inability to access)
• Microsoft Word within multiple services (Inability to load)
• Microsoft Forms (Inability to use via Teams)
• Microsoft Graph API (Any service relying on this API may be affected)
• Office Online (Microsoft Word access issues)
• SharePoint Online (Microsoft Word access issues)
• Project Online (Inability to access)
• PowerPlatform and PowerAutomate (Inability to create an environment with a database)
• Autopatches within Microsoft Managed Desktop
• Yammer (Impact to Yammer experiments)
• Windows 365 (Unable to provision Cloud PCs)

After redirecting traffic to a healthy service to reduce the impact, Redmond says that its telemetry indicates that Microsoft Teams functionality started to recover.