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Windows Update Bug Locks Security Feature
20 Oct
Summary
- October Windows update disables Smart App Control security feature.
- Users cannot re-enable the disabled security setting.
- A Registry hack can temporarily fix the glitch.
Microsoft's recent October Windows update, released on October 13, 2026, contains a significant bug that has disabled the Smart App Control security feature. This essential tool, introduced in 2022, protects Windows 11 users by blocking potentially malicious or suspicious applications and files.
The glitch prevents users from turning the Smart App Control back on if it was disabled. Microsoft has acknowledged the issue and is reportedly working on a permanent fix to be included in a future release.
In the interim, users experiencing this problem can resolve it by manually editing the Windows Registry. This involves adding specific keys to the Registry. After applying the Registry hack and rebooting their computers, users should be able to re-enable Smart App Control.
While Smart App Control offers robust protection against unknown malware, it may occasionally interfere with the installation of files from less common sources. Users are advised to enable it for enhanced security but can disable it if it proves too restrictive.
