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21CTO
21CTO
Oct 20, 2025 · Backend Development

Why the Latest Windows 11 Update Breaks Local Web Servers and How to Fix It

A recent Windows 11 October update (KB5066835) disables local web server functionality by breaking HTTP.sys, causing ASP.NET developers to lose localhost access, with workarounds like uninstalling the patch or disabling HTTP/2, and highlighting broader migration challenges from Windows 10 to Windows 11.

ASP.NETHTTP.sysKB5066835
0 likes · 4 min read
Why the Latest Windows 11 Update Breaks Local Web Servers and How to Fix It
Liangxu Linux
Liangxu Linux
Oct 27, 2021 · Information Security

How an Integer Overflow in IIS’s Read Function Triggers CVE‑2015‑1635

The article explains how a signed‑to‑unsigned integer overflow in IIS’s Read function bypasses size checks, leading to a zero‑length read that triggers the CVE‑2015‑1635 vulnerability in HTTP.sys, allowing attackers to crash the server with crafted Range requests.

CVE-2015-1635Denial of ServiceHTTP.sys
0 likes · 6 min read
How an Integer Overflow in IIS’s Read Function Triggers CVE‑2015‑1635