Microsoft’s recent KB5066835 update has caused widespread problems with localhost connections on Windows 11. This has led to complaints from admins and developers, who are reporting issues such as HTTP/2 protocol errors, failed connection attempts, and other localhost-related problems in development environments like Visual Studio.
The exact number of impacted systems is unknown, but online forums are filled with discussions and help requests. Users have found temporary fixes by disabling HTTP/2 protocol support or turning off Windows’ native hypervisor (Hyper-V).
Despite the issues, Microsoft claims that Windows 11 is the most secure, reliable, and capable operating system available for PCs. However, this latest incident highlights that Windows 11 may introduce new frustrations for users.
Key Takeaway: A recent KB5066835 update has caused localhost connection issues on Windows 11, leading to widespread complaints and temporary fixes from users and developers.
Source: https://www.techspot.com/news/109893-windows-11-wrecks-localhost-functionality-latest-cumulative-update.html