how to fix - 'this app has been blocked by your system administrator. contact your system administrator for more info,

Question

this thing shows in every App even in Microsoft Store and shows in some settings. this happens because I was trying to lock on app. this thing now showed in settings

Answer 1

Click your Start Button, then just type cmd

On the resulting list, right click Command Prompt and select 'run as Administrator'

Paste each of these commands into Command one at a time and press Enter, wait for each command to complete, before running the next command, if you receive an error on any command, ignore that and continue to the next command.

reg delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies" /f

reg delete "HKLM\Software\Microsoft\WindowsSelfHost" /f

reg delete "HKLM\Software\Policies" /f

reg delete "HKLM\Software\WOW6432Node\Microsoft\Policies" /f

reg delete "HKLM\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Policies" /f

reg delete "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware

reg delete "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies" /f

reg delete "HKCU\Software\Microsoft\WindowsSelfHost" /f

reg delete "HKCU\Software\Policies" /f

reg delete "HKLM\Software\Microsoft\Policies" /f

Then, close Command Prompt and restart (not shut down) your PC.

Answer 2

The error message "This app has been blocked by your system administrator" typically occurs due to an application control policy (AppLocker) that has been set up by an administrator. This policy can block all Microsoft Store apps if it is applied to your system. Here are some steps to resolve this issue:

1. Contact Your Administrator: If you are in a managed environment (like a work or school computer), you should contact your system administrator to adjust the AppLocker settings.
2. Editing AppLocker Policies: If you have administrative rights, you can edit the AppLocker policies. You can create a default rule that allows all Microsoft Store apps or create specific rules for individual apps. This requires access to a Windows Server 2012-based domain controller or a Windows 8-based computer with Remote Server Administration Tools installed.
3. Remove AppLocker Restrictions: If you have access to Group Policy, you can delete all AppLocker rules and disable the AppLocker service. This involves:
   • Backing up the Group Policy Object (GPO) that contains the current AppLocker rules.
   • Deleting all AppLocker rules in that GPO.
   • Pushing out the update to apply the empty AppLocker policy on client computers.
   • Separately disabling the AppLocker service on those computers.
4. Check Group Policy Settings: If you suspect that Group Policy is managing permissions, you can check the settings by running gpresult /h <path>\gpreport.html in an administrative command prompt and reviewing the permissions assigned to the All Application Packages group.

By following these steps, you should be able to resolve the issue and regain access to the blocked apps.

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References:

• Error when you start Microsoft Store apps: This app has been blocked by your system administrator
• Modern, Inbox, and Microsoft Store Apps troubleshooting guidance