October Windows 11 update disables key Smart App Control security setting
A software bug in the latest Windows 11 update prevents users from enabling a security feature designed to block untrusted applications.
FTMQ Security, written by our newsroom0 views

A software bug in the October Windows 11 update disables a security setting for Smart App Control, ZDNet Security reported on October 20. The update rolled out on October 13 as part of Microsoft's regular Patch Tuesday distribution. [1]
Smart App Control was introduced to Windows 11 in 2022 to block potentially malicious or suspicious applications and files from running on systems. The current glitch prevents users from turning the feature back on if it is disabled, according to ZDNet Security. [1]
Windows 11 was originally released in October 2021 as part of the Windows NT operating system family. Microsoft handles the software under a servicing model that delivers regular updates and security patches to users and enterprise environments. [2]
System administrators and users affected by the glitch can apply a Registry workaround to re-enable the feature while awaiting an official fix from Microsoft, ZDNet Security reported. [1]
In short
- The October 13 Windows 11 update disables a key Smart App Control setting.
- Smart App Control blocks untrusted and malicious applications from running on Windows 11.
- A Registry workaround is available to fix the feature state.
Sources
Every paragraph above points to the numbered items it rests on. Read the originals here.
- [1]Latest Windows update disables key security setting – but there’s a workaroundZDNET Security, 9h ago (the report this story comes from)
Background
- [2]Windows 11 version history on Wikipedia
Our newsroom writes these reports with the help of software, from the 2 sources listed and nothing else, and checks them against those sources. Facts can still be wrong or move on; the originals are the record. Spotted a mistake? Write to daniel@monsterkong.com.
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