Update 10/17/25: Microsoft fixes the bug using a KIR (Known Issue Rollback) update. More information added to end of story. Microsoft's October Windows 11 updates have broken the "localhost" ...
Microsoft’s latest Windows 11 update, KB5066835, has broken localhost support and disrupted development workflows across the ...
Microsoft has fixed a known issue breaking HTTP/2 localhost (127.0.0.1) connections and IIS websites after installing recent Windows security updates. This bug affects both Windows 11 and Windows ...
ExtremeTech on MSN
Microsoft Races to Fix Windows 11 Update Bug After Reports of App and Hardware Failures
Microsoft's timing is awkward, as it continues to encourage Windows 10 users to upgrade now that official support has ended.
If you encounter the Localhost refused to connect error message when running any web server on your local Windows 11/10 computer, then this post is intended to help ...
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