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

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

The bug, introduced in build 26100.6899, has been traced to HTTP.sys, the Windows kernel component that handles local HTTP ...

Windows updates usually bring security enhancements, bug fixes and new features. Sometimes, though, these updates can also ...

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

Kernel web stack faceplants, registry hacks and rollbacks ensue Microsoft’s latest Windows 11 patch tripped over its own ...

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

In environments where the cumulative update for Windows 11 released by Microsoft in October 2025 (KB5066835) has been applied, an issue has occurred where localhost is no longer accessible. This has ...

The transition from CSP to KSP has triggered failures in smart card authentication, IIS connectivity, and recovery mode ...

A critical October patch has disrupted many development environments in Windows 11, forcing companies to roll back updates and causing them to question Microsoft’s QA process.