Bleeping Computer

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

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" ...
Windows Latest

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

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

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 Windows security updates.

微软承认 Windows 11 更新导致 localhost 127.0.0.1 连接错误

近期，微软官方正式确认 Windows 11 24H2 和 25H2 版本在安装 2025年10月的 Patch Tuesday 更新或预览更新后，会出现 localhost 本地连接问题。 此次 localhost 127.0.0.1 ...
GitHub

Issue with Port Binding on Localhost and 127.0.0.1 when Running Multiple WSL Instances

Ensure you have two WSL 2 instances. Start the second WSL instance (using wsl -d <distribution_name>). Attempt to bind any local port on localhost or 127.0.0.1 (for ...

Windows 11更新致localhost连接异常 微软推卸载补丁临时方案

微软已确认，Windows 11 24H2及25H2版本在安装2025年10月的定期安全更新及其预览版后，部分用户遭遇了本地连接异常的问题。受影响设备在访问localhost时出现连接中断现象，系统提示“ERR_CONNECTION_RESET”错误 ...
Modern Engineering Marvels on MSN

Microsoft’s Emergency Windows 11 Patch Targets Critical Update Failures

Did Microsoft just break its own operating system while encouraging millions to update? For some Windows 11 users, the ...

大量开发者受影响！微软确认Win11更新致本地连接127.0.0.1错误

快科技10月17日消息，微软确认Windows 11 24H2和25H2版本在安装2025年10月的Patch Tuesday更新及其预览更新后，出现了localhost本地连接问题。此次更新问题对开发者影响较大，因为本地连接127 ...

Microsoft to release emergency fix for Windows 11 update that caused widespread problems

Microsoft has since indicated that a fix is on the way in a subsequent update for issues with Windows 11 KB5066835. The ...

Yes, a Windows 11 update killed "localhost" support — Microsoft breaks Windows again

For developers, this is more than an inconvenience. Localhost is a core part of the workflow. It should never break from a ...
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.

部分 Win11 用户反馈安装九/十月更新后导致 127.0.0.1 访问故障

IT之家 10 月 17 日消息，科技媒体 bleepingcomputer 昨日（10 月 16 日）发布博文，报道称微软 Windows 11 系统的 9 月可选更新和 10 月累积更新存在 BUG，导致开发者和部分应用程序无法通过 HTTP / 2 协议连接至本地主机（localhost）。 IT之家援引博文介绍，部分 Windows 11 用户安装 ...