Though this error – 0xC004F074 KMS can be fixed manually too, it is highly recommended that let it fix automatically.

For this, you need to search for reliable system optimization software. It can help you scan the system and fix the error.

Also, you can activate your Windows 10 through the phone by following the steps given below. You can also adopt a different method to eliminate 0xC004F074 error by running SFC (System File Checker) on your OS.

First Method

Change the critical Using activation wizard

• Click the key combination – Win + R and then type- slui four and press- Enter. 
• Next, press- Win key + S to expand – settings 
• Click – Update & security and click – Activation
• In case your computer has not activated, an option – activate by phone will be displayed
• Now, start – product activation wizard. 
• Expand the charms menu and then click – Settings
• Head to – change PC settings 
• Click on – activate windows
• Now, click on any option from – enable by phone, Activate, or contact customer assistance for help. 
• Now, perform the instruction given on the screen and then activate Windows via your phone.

Second Method

Make use of – System File Checker to resolve the error 

• Click – Win key + X and then select – Command Prompt (Admin)
• Now, type – sfc/scannow and hit enter to begin – System File Checker.

• This process can take some time, so you need to wait till the process gets over.
• After the process is done, reboot your machine and activate – Windows 10 online. In case the problem still exists, carry out the steps mentioned in the first method to enable it with the phone.
• If the above methods fail to work, you should contact the Support center of Microsoft and let them know the details of the error you are facing.

In case you manage to eradicate the Windows activation error 0xC004F074 and successfully activated Windows 10, then make sure you also install a reliable optimization tool to maintain its performance.