How to Repair Windows Activation Error 0xc004f025 ‘Access denied’

Windows error code 0xC004F025 indicates a problem related to Windows activation. The most common cause of Windows 10 activation error 0xC004F025 is the account type of the logged-in user. In order to activate or reactivate Windows, the logged-in user must be an administrator. There are other reasons for this error, read on.

What is the cause of Windows activation error 0xc004f025?

Permissions problems: In most cases, error code 0xc004f025 appears on the screen if you do not have administrator rights when activating Windows.

Incorrect product key: This error occurs on your computer when you try to activate Windows with an incorrect product key. If you can’t remember the authorized product key, don’t panic, as the key can be retrieved from your computer.

New hardware: If you’ve recently replaced a critical hardware component in your processor with a new one or purchased a new computer, there’s a good chance that Windows 10 error code 0xc004f025 will appear.

Leftover files from the old license key: Your operating system keeps records of dependencies associated with the Windows product key. If the dependency in your directory is associated with an old license key, you may experience a Windows error code 0xc004f025 on your computer.

How to fix Windows activation error 0xc004f025?

Run the activation troubleshooter

In case error 0xc004f025 is the result of a locally imposed license restriction, you should run Windows Activation Troubleshooter and see if it can solve the problem automatically.

  1. Open the Run dialog box by pressing Windows + R. Then type “ms-settings:activation” and press Enter to open the Activation tab of the Settings application.
  2. Click the Activation tab, go to the right pane of the window, and locate the Activate button at the bottom of the screen. Click the Troubleshoot button.
  3. After launching the utility, patiently wait for the first scan to complete.
  4. If any problems are detected during the activation, it will suggest a repair strategy.
  5. If you agree, click Apply this patch and wait for the process to complete.
  6. After successfully applying the patch, restart your computer and check if the activation process was successful after rebooting the system.

Remove Rearm dependencies

One of the common problems that can cause this error is a problem with the way your operating system stores and maintains the rearm dependencies associated with the currently active Windows license key. One cause of error 0xc004f025 when trying to apply a new Windows license key using the SLMGR utility may be related to the remaining upgrade files from the old license key.

  1. Press Windows + R to open the “Run” dialog box. Then type “regedit” in the text box and press Enter to open the registry editor.
  2. Once in the registry editor, use the left pane to navigate to the next location:
    Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform
  3. When you are on the right-hand side of the screen, navigate to the right-hand side of the screen and double-click SkipRearm.
  4. Then in the Edit DWORD menu associated with SkipRearm, set the base to hexadecimal and the data value to 1, then click Ok to save your changes.
  5. After successfully adjusting the SkipRearm value, close the registry editor completely.
  6. Then press the Windows + R key combination to open the Run dialog box.
  7. Then type “cmd” in the text box and press Ctrl + Shift + Enter to open the extended CMD prompt.
  8. When prompted, click Yes to grant administrator privileges.
    At the extended CMD prompt, type the following command and press Enter to execute it: slmgr rearm.
  9. Wait until a success message appears. In some cases, this process may take more than 10 seconds.
  10. Open File Explorer (My Computer) and manually navigate to the following location: C: WindowsSystem32
  11. Use the search function in the upper right corner to find the file slmgr.vbs.
  12. When you find it, right-click, select Rename, and replace the .vbs extension with .old.
  13. This will cause your operating system to ignore that file and create a new one from scratch.
  14. After making the last change, restart your computer and check if you can activate your Windows license with the SLMGR utility and if you still see the 0xc004f025 message.

Launch CMD with administrator privileges

One of the most common causes of error 0xc004f025 is a problem with permissions. Activation attempts and SLMGR operations usually require administrator privileges to complete.

Before trying other solutions, first, make sure that the command line window in which you are trying to activate your Windows license key via SLMR has administrator privileges.

  1. Press the Windows + R keys to open the “Run” dialog box. Then type “cmd” in the text box and press Ctrl + Shift + Enter to open the extended CMD prompt.
  2. When prompted, click “Yes” to give the administrator access to the CMD terminal.
  3. Type the same command that caused error 0xc004f025 and see if the problem is resolved.

Frequently Asked Questions

  1. Using the command line.
  2. Run the Windows 10 activation troubleshooter.
  3. Check the product key.
  4. Perform a clean Windows installation.
  5. Reactivate Windows after changing hardware.

  1. Press the Windows key and the X shortcut key at the same time to bring up the power menu.
  2. From the list of options, select Run.
  3. In the text box, type cmd and press Ctrl+Shift+Enter together.
  4. When prompted, click Yes.

To solve this problem, the administrator must use the SLMGR command-line tool. The full form of SLMGR is Software Licensing Management Tool (slmgr), a Windows VBS file used for activation purposes. Open a command line with administrator privileges and run slmgr. vbs.

You need a digital license or product key to activate Windows 10. When you're ready to activate, select Open Activation in Settings. Click Change Product Key to enter the product key for Windows 10. If Windows 10 has already been activated on your device, your copy of Windows 10 should be activated automatically.