your windows license will expire soon

I had a problem of Windows (8.1) saying your windows license will expire soon again and again. It is disturbing one. I don’t remembered where I pressed.

Anyway to solve that problem you need to do following things.

Open the Task Manager. To open the Task Manager Hold down the ctrl and alt keys and press delete.

Select Task Manager.

Select the Windows Explorer, then right click on it and select Restart.

 When the process has restarted, close Task Manager, then right click the Start Menu icon, select Command Prompt (Admin). In order to open Command Prompt in administrator.

1. Click Start, click All Programs, and then click Accessories.
2. Right-click Command prompt, and then click Run as administrator.
3. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.

Enter the following command and hit enter ( Note that there is a space between slmgr and -rearm )

slmgr -rearm

Restart the computer.