How to fix
Windows activation error 0xC004D302
on Windows

Hello. Today I received an activation error 0xC004D302 on my Windows computer. Some functions stopped working. What should I do?

Windows requires an activation key to work properly. If for some reason the license files become corrupted, users can encounter activation errors. We previously wrote about 0x8007232B, 0x87e107f9, 0XC004F009, and many other activation errors.

When Windows is not activated, users cannot change the wallpaper, customize the lock screen, change icons, etc. The most worrying thing is that such a device is not eligible to receive the latest security patches and feature updates which can make the system vulnerable.[ref en-1]

Usually, they can be fixed by using the Windows activation troubleshooter, installing Windows updates, or using the phone activation option. Recently, some people encountered a 0xC004D302 Windows activation error. This error appears on computers running Microsoft Windows non-core edition. The full message reads as follows:

Software licensing service version: 10.0.16299.15

Error: 0xC004D302 On a computer running Microsoft Windows non-core edition, run 'slui.exe 0x2a 0xC004D302' to display the error text.

Most of the time, the error is triggered by issues in the Machinekeys folder, reactivation of trusted data memory, or attempts at executing different commands after executing slmgr. Vbs /rearm without restarting the computer. In this guide, you will find 4 steps that should help you fix Windows activation error 0xC004D302.

However, manual troubleshooting can be a lengthy process. You can try using a maintenance tool like [d1]. This powerful software can fix most system errors, BSODs,[ref en-2] corrupted files, and registry[ref en-3] issues. Otherwise, follow the step-by-step instructions below.

Solution 1. Fix Corrupted System Files

Use Command Prompt commands to repair system file corruption:

• Open Command Prompt as administrator
• Use the following command and press Enter:
  sfc /scannow

• Reboot your system
• If SFC returned an error, then use the following command lines, pressing Enter after each:
  DISM /Online /Cleanup-Image /CheckHealth
  DISM /Online /Cleanup-Image /ScanHealth
  DISM /Online /Cleanup-Image /RestoreHealth

Solution 2. Edit Windows Registry

• Go to the Start menu and type Registry
• Now open the Registry Editor and navigate to the following location:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform

• Go to the right panel and right-click on SkipRearm
• Select the Modify option and a dialogue box Edit DWORD 32-bit folder should appear
• Here set the Value Data to 1 and click the Ok option
• Restart your computer
• Now go to the Start menu, and search for Command Prompt
• Select the run as an Administrator option
• Type the following command and press Enter:

slmgr –rearm

• Check if the error is fixed

Solution 3. Check Drive

The activation error might have been caused by a corrupted drive. Perform a scan to make sure it is working properly:

• Open File Explorer and click on My PC
• Right-click on your c: / drive and select Properties
• Then select Tool from its menu bar, and press the Check option to scan the Drive to detect the system file errors
• Click Scan Drive

• Click on Check Defective Sectors option just below the Check Disk Option
• Once it is complete, check if the error appears or not

Solution 4. Use System Restore

You can use the System Restore tool to revert your system to a previous point. Keep in mind that this can result in software loss if it was installed after the restore point:

• Press the Window key + R to open the Run dialogue box
• Type rstrui and hit Enter
• Select choose a different restore point and then press the Next option

• Now select the option to your required time and date when the error didn’t appear
• Then press the Next option and then click on Finish
• Once the restore is complete, check if the issue is fixed