The Windows Activation system periodically checks for the validity of your key. If you have a genuine key and suddenly receive Windows Activation Error 0x800704cF, this error means we didn’t find a valid Windows license for your computer. In this guide, we will share how to fix Windows Activation Error 0x800704cF.
You must use a valid product key to activate Windows, Windows Activation Error 0x800704cF.
Fix Windows Activation Error 0x800704cF
The first thing I will recommend you is to run the Windows Activation Troubleshooter via Windows 11 Settings > System and then select Troubleshoot. It should be able to resolve the issue automatically and activate your Windows.
In case this has failed, follow the steps as below:
- Make a note of your Product key on the notepad on the computer.
- Go to Settings > Update & security > Activation .
- Select Change product key, and then enter the 25-character product key.
Your product key should be in the confirmation email you received after buying Windows, included with the packaging that came with your computer, or on the Certificate of Authenticity (COA) attached to the back or bottom of your Computer.
This will restart the activation process on your Windows 11/10 Computer. Once Microsoft validates the keys, it will activate your Windows. If it says the key is not valid, you may have to buy a new one.
I have seen this error reported with a peculiar case. One of the forum users reported that his Windows kept getting activated and deactivated. If that’s the case only Microsoft Support team can help. Many a time, when a computer tries to activate itself a lot, the server blocks that key.
Lastly, try to remember if you did any major hardware changes on your Windows 10 computer. If yes, this could be the reason why the Activation process is not able to find the key. Windows 11/10 OS Stores the key locally and is in relation to your hardware configuration. If something major changes, the combination becomes invalid. If this is the case, check out the solution which is the same as 0xC004F211
Similar error codes:
