After installing the Microsoft Defender update KB5007651 (Version 1.0.2302.21002), released on 2025-04-16, users are receiving the recurring error notification “Local Security protection is off. Your device may be vulnerable.” It happens regardless of whether this security feature is enabled or not.
Also, it comes with options to Go to Settings and when you select it, you won’t find the Local Security Authority option. You will instead see something like “Page not available. The page you are trying to access has no supported features and is not available.”
Change Relevant Registry and Group Policy Settings
Microsoft actually released an update on 2025-06-11 for Microsoft Defender Antivirus antimalware platform that addresses the persistent “Local security protection is off” notification.
But Microsoft has already removed this KB5007651 (Version 1.0.2303.27001) update because of other issues that were present within. So, until Microsoft releases another stable update, there’s no permanent way to take care of this problem.
However, the missing Local Security Authority option is a different matter altogether. In the current version of Windows, Microsoft has already removed this security option from your settings. The only ways to enable it are through the Registry Editor or the Local Group Policy Editor.
It’s best to change the option in both configurations. But if you are a Windows Home user, your systemwon’t have the Local Group Policy Editorby default. Simply making the registry changes should be enough in this case.
After that, you may simply ignore the prompt to restart after dismissing the “Local Security protection is off. You can go through your normal work without worrying about any security vulnerabilities. But remember toinstall all future updatesfor Microsoft Defender Antivirus antimalware platform whenever they become available.
