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How to Gain Full Ownership(Permissions) for Registry Key

This tutorial will guide you how to gain full permmisions for registry key in Windows 10.

When the user account you are currently signed in to Windows 10 lacks the necessary privileges to edit the registry keys, the Registry Editor prompts error messages as follows:

  • Cannot create value: Error writing to the registry.
  • Cannot edit value_name: Error writing the value’s new contents.

Lost Permission to edit registry key

How to Gain Permissions of Protected Registry Key in Windows 10

You need to take ownership of that particular key and grant full permissions to your signed-in account. Here's how:

Step 1: Open Run box by pressing Win+R keys.

Type in regedit, and click OK to open the Registry Editor.

Open Registry Editor

Step 2: Navigate to the protected key you want to take ownership of (ex:cmd)

HKEY_CLASSES_ROOT\Directory\shell\cmd

Right-click the cmd key, and click on Permissions.

Modify the permissions of cmd

Step 3: In the Permissions window that appears, click on Advanced.

Click Advanced

Step 4: In the Advanced Security Settings dialog, you can see the current owner (TrustedInstaller) of your selected key. Click Change link.

Change owner username

Step 5: Type in your account name, click Check Names button to convert the username to correct format. Click OK.

Select user or group

Step 6: Check the Replace owner on sub containers and objects option. Click Apply and OK.

Check the Replace owner on objects option

Step 7: When back to the Permissions window, select the desired user name and then check Allow checkbox under the Full Control row, and click OK.

Add Full control to permissions of Administrators

If your user account is not shown under the Group and user names list, click on Add button.

Step 8: When done, close the Registry Editor.

Now you've taken ownership of a protected registry key and grant your account full permissions.