The primary cause of this error is an expired OS license of Windows 7/9/8.1/10. Some users experience this error even when they have bought a new device, which had Windows OS pre-installed. This can occur due to incorrect license key or if the key is rejected by the system.
Why is my Windows license expiring?
Your Windows license will expire soon keeps popping up If you bought a new device that comes pre-installed with Windows 10 and now you are getting the license error, it means that your key might be rejected (the license key is embedded in BIOS).
Why is my Windows 10 Pro license expiring?
It will only expire if it is part of a volume license which is normally use for business and an IT department maintains its activation regularly.
