Security News > 2022 > July > Microsoft Teams outage also takes down Microsoft 365 services

What initially started like a minor 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," the company revealed on its official Microsoft 365 Status Twitter account more than 8 hours ago.
Teams was not the only product impacted by the outage since users also began reporting failures to connect to various Microsoft 365 services.
Microsoft confirmed the issues saying that the subsequent Microsoft 365 outage only affected services that came 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 explained.
After redirecting traffic to a healthy service to mitigate the impact, Redmond said its telemetry indicates that Microsoft Teams functionality started to recover.
News URL
Related news
- New Microsoft 365 outage impacts Teams, causes call failures (source)
- Microsoft links recent Microsoft 365 outage to buggy update (source)
- Microsoft's End of Support for Exchange 2016 and 2019: What IT Teams Must Do Now (source)
- Massive botnet hits Microsoft 365 accounts (source)
- Botnet targets Basic Auth in Microsoft 365 password spray attacks (source)
- Microsoft Teams tactics, malware connect Black Basta, Cactus ransomware (source)
- Microsoft 365 apps will prompt users to back up files in OneDrive (source)
- Malicious Adobe, DocuSign OAuth apps target Microsoft 365 accounts (source)
- Microsoft Exchange Online outage affects Outlook web users (source)
- Hidden Threats: How Microsoft 365 Backups Store Risks for Future Attacks (source)