Struggling to launch Teams? Microsoft recalls update causing failed startup and infinite loading loops here's what we know

Date:
Mon, 20 Apr 2026 16:08:49 +0000

Description:
A service update was triggering an error in some Teams desktop clients, forcing Microsoft to revert the changes.

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now subscribed Your newsletter sign-up was successful Join the club Get full access to premium articles, exclusive features and a growing list of member rewards. Explore An account already exists for this email address, please log in. Subscribe to our newsletter 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 Were 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. Article continues below You may like Microsoft 365 and Outlook were down for many here's what went wrong Windows 11 update breaks Edge here's what to do if you're affected Major Microsoft 365 outage left users without access to emails and files - here's what we know 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." Are you a pro? Subscribe to our newsletter Sign up to the TechRadar Pro newsletter to get all the top news, opinion, features
and guidance your business needs to succeed! Contact me with news and offers from other Future brands Receive email from us on behalf of our trusted partners or sponsors By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.

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 The best antivirus for all budgets Our top picks, based on real-world testing and comparisons

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Link to news story: https://www.techradar.com/pro/security/struggling-to-launch-teams-microsoft-re calls-update-causing-failed-startup-and-infinite-loading-loops-heres-what-we-k now


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