---
title: "Windows 11 Update Disables Smart App Control Feature Due to Bug"
url: https://newscentral.site/windows-11-update-disables-smart-app-control-feature-due-to-bug/
language: en
publisher: "News Central Site"
section: "Technology"
published: 2026-10-20T14:26:05.000Z
updated: 2026-10-21T06:45:49.664Z
id: 53927869-e676-47a5-8862-6351c1241299
source: "ZDNet https://www.zdnet.com/tech/microsoft-october-windows-update-disables-security-setting-workaround/"
attribution: "Link to https://newscentral.site/windows-11-update-disables-smart-app-control-feature-due-to-bug/ and name News Central Site when you quote or summarize this story."
---

# Windows 11 Update Disables Smart App Control Feature Due to Bug

A recent Windows 11 update has introduced a critical issue affecting a key security feature, leaving users vulnerable to potential threats.

The latest Patch Tuesday update, released on October 13, has inadvertently disabled the Smart App Control setting due to a bug. This glitch prevents users from activating the feature even if it's been previously enabled.

Smart App Control is a built-in security tool designed to block potentially malicious or suspicious apps and files from infecting computers. Introduced in Windows 11 in 2022, this feature offers stronger protection against emerging threats compared to other native security settings.

The update has affected multiple Windows 11 PCs tested by our team; on all three devices that received the latest update, the Smart App Control button is grayed out and unavailable for activation.

Microsoft has acknowledged a bug in its latest Windows update that disables the Smart App Control feature, which is designed to block malicious apps from running on users' PCs.

To determine if you're affected by this issue, navigate to Settings and select the Privacy & security section. From there, click on Windows Security and then choose Protection areas, selecting the option for App & browser control. In the following window, click the link for Smart App Control settings; if the feature is currently set to Off but the toggle for On is grayed out, you've encountered this problem.

The bug prevents users from enabling or disabling the Smart App Control feature in Windows Security settings, rendering it unavailable for use on affected PCs. However, a workaround has been suggested by Microsoft, which involves modifying the Windows Registry using the command prompt.

To implement this fix, open the Start menu and type "cmd" in the search box to launch the Command Prompt. Choose the option to run as administrator to modify the Registry; otherwise, you won't be able to proceed with the necessary changes.

After making the necessary Registry changes, users should receive a confirmation that each operation has completed successfully. This is an important step, as it ensures that the modifications are applied correctly. Once the command prompt is closed, users can reboot their PC and log back in.

Upon logging in again, users can head to the Smart App Control settings screen, where they should now see the On option available for activation. This allows them to enable the feature and start receiving protections against potentially malicious apps and files. Users who have enabled this feature will be able to defend themselves against unknown malware threats.

It's worth noting that enabling Smart App Control can sometimes interfere with users' workflow, particularly those who frequently download or install files from unfamiliar sources. In such cases, it may be necessary to temporarily disable the feature. However, for most users, the benefits of having an additional layer of protection outweigh any minor inconvenience.

By following these steps and making the necessary Registry changes, Windows users can restore their ability to enable Smart App Control and start receiving enhanced security protections against potentially malicious apps and files.

---
Source: [ZDNet](https://www.zdnet.com/tech/microsoft-october-windows-update-disables-security-setting-workaround/)  
Published by News Central Site: https://newscentral.site/windows-11-update-disables-smart-app-control-feature-due-to-bug/