• Microsoft rolls back faulty Teams update after widespread desktop app errors
• Regression in client build caching caused denial of service, leaving users unable to load messages
• Fix requires users to fully restart Teams; Microsoft monitoring telemetry to confirm resolution

Microsoft rolled back an update that seemingly broke the Teams desktop app for some people.

According to multiple sources, many people could not get Teams up and running, and were instead seeing an error message saying “We’re having trouble loading your message. Try refreshing.”

Late last week, Microsoft confirmed the error, and assigned it a designation tracker TM1283300. It explained that the problem stemmed from a “transient issue in the service infrastructure” that caused older Teams desktop client builds to “enter an unhealthy state”, BleepingComputer reported.

Affecting many users

"We've confirmed that our automated recovery system has successfully remediated impact and we're reaching out to your representatives to validate this issue is fully resolved for all users," Microsoft said.

A few hours later, Microsoft rolled back the update, saying that a “regression” in the Teams client build caching system was causing the denial of service.

If you are using Microsoft Teams and are seeing the same error, you are advised to restart the client.

"Now that the update that introduced the regression has been fully reverted, a restart will be needed in which users fully quit and then restart Teams so that our solution propagates," the company explained. "We're continuing to await feedback from the subset of impacted users and monitoring our service telemetry to confirm the issue is resolved after we've completed the aforementioned reversion."

Microsoft Teams is one of the biggest communication and collaboration platforms out there, with more than 320 million daily active users (2025 numbers), and more than a million organizations. The company did not say how many were affected by this incident, but BleepingComputer found it flagged the outage as an incident, “which commonly applies to critical service issues and noticeable user impact”.

Microsoft has come under a lot of fire lately, mostly for the way it approaches Windows 11, the pivot towards web apps, aggressive AI push, and ads.

Via BleepingComputer

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Sead is a seasoned freelance journalist based in Sarajevo, Bosnia and Herzegovina. He writes about IT (cloud, IoT, 5G, VPN) and cybersecurity (ransomware, data breaches, laws and regulations). In his career, spanning more than a decade, he’s written for numerous media outlets, including Al Jazeera Balkans. He’s also held several modules on content writing for Represent Communications.