Microsoft's Windows 11 update KB5089549, released on May 13, 2025, is causing problems for some users. Reports indicate the update is failing to install on certain systems. When installation fails, Windows displays an error message stating: "Something didn't go as planned. No need to worry–undoing changes. Please keep your computer on."
Users report internet slowdowns after update
In addition to installation failures, some users report slow internet access after installing KB5089549. According to posts on Reddit, the performance issues began "immediately after deployment of KB5089549." However, these reports are limited and there is no widespread confirmation of the problem. It is possible the slowdown is due to a configuration issue on affected systems.

Microsoft's Windows Release Health page currently lists no active known issues for this update. The company has not acknowledged the reported problems or provided a fix. Users experiencing issues may need to wait for an official response from Microsoft.
The source of the reports includes Reddit and the Microsoft forum. Microsoft has not confirmed the installation failures or the internet slowdowns. The company has not announced a timeline for a resolution.



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