How to Block Apps from Running in Windows (Without Group Policy Editor)

Overview

This guide demonstrates a method to restrict executable files from running in Windows, applicable even in the Home edition without using the Group Policy Editor. It's especially useful for parents or administrators wanting to control app usage without Professional edition features.

Context

• Windows Professional features allow blocking executables—a common business tool to enforce software policies.
• Windows Home editions require manual tweaks like modifying the registry to achieve similar functionality.

Key Points

Blocking Executables via Registry

1. Access Registry Editor:

   • Open by typing regedit from the Start menu. Confirm with User Account Control.

2. Navigate to Specific Registry Key:

   • Go to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies.
   • Create a new key named Explorer.

3. Create "DisallowRun" Key:

   • Within Explorer, add a new DWORD (32-bit) value named DisallowRun and set its value to 1.
   • Create a new key within Explorer called DisallowRun.

4. Add Applications to Block:

   • In DisallowRun, add a new string value (e.g., 1) and set its data to the executable name (MsEdge.exe for Microsoft Edge).
   • Each additional blocked app gets its own numbered string value.

5. Reboot the Computer:

   • Changes take effect after a system restart.

6. Testing Block:

   • Attempting to run blocked apps should display a restriction message.

Overcoming Method Limitations

• Renaming the executable will circumvent the block.
• To prevent users from undoing settings:
  • Block regedit.exe itself in the same way to prevent registry modifications.

Accessing and Modifying Blocked Registry Settings

• Access through another Admin account or Boot into Windows Recovery:
  • Load the appropriate NTUSER.DAT file from the user's directory.
  • Navigate to the same registry path and modify as needed.

Downsides and Considerations

• Users might bypass by simply renaming executable files.
• Blocking the regedit limits control, necessitating more complex recovery for re-access.
• Group Policy Editor in Windows Professional offers more robust and flexible management.

Conclusion

This method is a practical workaround for app blocking on Windows Home. While it works under most conditions, aspects like executable renaming can pose challenges.

For expanded techniques or pranks using this method, refer to related video resources.