Windows 11 updates break localhost (127.0.0.1) HTTP/2 connections

Microsoft' Windows 11 updates have broken the "localhost" functionality, making applications that connect back to 127.0.0.1 ...

Microsoft fixes Windows bug breaking localhost HTTP connections

Microsoft has fixed a known issue breaking HTTP/2 localhost (127.0.0.1) connections and IIS websites after installing recent ...
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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.
Windows Latest

Microsoft confirms Windows 11 KB5066835 issues. Localhost, File Explorer preview, install errors

Windows 11 KB5066835 is causing the following issues: a bug that blocks lockhost connection, File Explorer preview pane and ...

Windows 11 Update Goes Rogue, Prompts Microsoft Emergency Response

Microsoft confirms a new Windows 11 issue affecting the Recovery Environment, with an emergency update now rolling out to ...