Fix Windows 10/11 Activation Error 0xC004F213 Windows Is Not Activated 

Fix Error Code 0xC004F213 Windows Reported That No Product Key Was Found On Your Device Error Code 0xC004F213
Step 1) Run Activation Troubleshooter SLUI
Step 2) Try change product key option
In case Windows 11/10 came preinstalled and you don't know the product key then use this command in windows powershell/command prompt:
(Get-WmiObject -query ‘select * from SoftwareLicensingService’).OA3xOriginalProductKey
Step 3) Run these commands
ipconfig /flushdns
ipconfig /release
ipconfig /renew
netsh winsock reset
netsh int ip reset
Restart your PC
Step 4) Run this command
cscript \windows\system32\slmgr.vbs -ato
Step 5) Use phone activation
Slui 4
Step 5) Use Command Prompt
slmgr -ipk xxxxx-xxxxx-xxxxx-xxxxx-xxxxx
x stands for license key
In case Windows 11/10 came preinstalled and you don't know the product key then use this command in windows powershell/command prompt:
(Get-WmiObject -query ‘select * from SoftwareLicensingService’).OA3xOriginalProductKey
If license key not seen in command prompt, then use the command in PowerShell Window
Run this command on first command prompt window:
slmgr.vbs -ato
Reboot Your computer and now try activating your windows again.
Step 6) Install Windows 11/10 Using USB Flash Drive (You will lose data and apps on your computer so create a backup first)
• How To Install Windows...
Step 7) Contact Microsoft- support.micros...