Open a command prompt in your trial version of windows and enter the following command, “slmgr /rearm”. Once done, hit “Enter” and restart your computer. For a three month trial, such as the Windows 8.1 Enterprise Trial, that gives you nearly nine months to try before you buy. Most Windows trial versions let you rearm three times, but try for a fourth and you’ll be denied. Check out a recent article posted on PureIntoTech by Mauro for more information about rearming trial versions of Windows. The article also tells you have to use the slmgr command to find out more information about your license information. If you find value in this little tip, make sure to pass it along to any friends you have who are running a Windows trial. Original Source – PureInfoTech – How to Extend the 90-Day Trial Period of Windows 8 Enterprise