The latest Windows 11 cumulative update caused Wi-Fi connectivity issues for some users. While you wait for Microsoft to submit a patch, it is possible to at least temporarily fix the problem.
Every new Windows 11 update has its surprises in store. And the latest version is proving to be quite problematic. The cumulative update known as KB5033375, which was released alongside Patch Tuesday in December this year, is causing Wi-Fi connection issues for some users. Complaints about this issue have multiplied on Reddit, Twitter, and Microsoft's help forums. However, this nasty bug would only affect Windows 11 users who want to connect to corporate or university wireless networks.
A mistake related to professional networks
Bleeping Computer, which reports the information, says the University of British Columbia in Canada posted an incident report about this damage online. It states: “This issue affects corporate wireless networks (ubcsecure, ubcprivate, eduroam), but not home Wi-Fi/Internet usage.” The information is confirmed by the numerous testimonials from users affected by the issue and all indicate that this error occurred on their company's wireless network. A priori, the problem would therefore particularly affect corporate networks that have the fast roaming functionality enabled. This is a function that allows users to quickly access from a Wi-Fi hotspot to another. An indispensable system if, for example, you are traveling on company premises in order to have an optimal WiFi signal and therefore a fast and stable connection.
Windows 11 22H2 and 23H2 users who have installed the KB5033375 update (and possibly the optional KB50532288 update) appear to be the main victims of this issue.
Uninstall the update manually
If you are affected by this issue, you have no choice but to manually uninstall the latest Windows 11 update while you wait for Microsoft to push out a corrective patch.
To do this, go to Settings from Windows 11, then in Windows Updatecall up the menu Update history. At the bottom of the window you will now reach the menu Uninstall updates and check for updates KB5033375 (and possibly KB50532288), then click the button Uninstall. Once you have finished uninstalling these updates, restart your computer.
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Source: Bleeping Computer