After installing Windows Operating System using this tutorial , your Windows OS should be "Windows License is Expired".
Once your build reaches the license expiration date, your computer will automatically reboot approximately every 3 hours and the windows will no longer boot, 2 weeks after the license has expired.
![](https://ariq.nauf.al/blog/content/images/2022/05/image-2.png)
So if you want to test the windows, you can use trial license on your Windows for 5 times by following this steps :
- Open Windows Powershell in Administrator mode ( Run by Administrator )
- Type
slmgr -rearm
- Restart the system for the changes to take effect
![](https://ariq.nauf.al/blog/content/images/2022/05/image-5.png)
Congratulations your trial windows license is extended for 180days (6 month).
![](https://ariq.nauf.al/blog/content/images/2022/05/image-6.png)
If your windows license expired again after 180 days, you can extend it by slmgr -rearm
again on Windows Powershell.
180 days x 5 = 900 days (approximately 29 months!)