NOTE 3: Programs updated after the creation of selected restore point will be restored back to the previous version and will not be uninstalled.
Step 1: Type either in Start menu search box or Run command box and then press Enter key to open System Properties.
Even though you change the date and time of your system, the system still keeps track of that change.
Software developers can see the fact the time was changed, so they can still do a check for how long the software has been running.
a long term solution, and there's probably smarter ways to extend a trial than that (I've run trial software on disposable VMs for example, its a nice way to keep a system clean).
I've done it once or twice when I've had school supplied software stop working a day or two before a big deadline, and I didn't have the time to go get a new key.
For instance, if you were running Firefox 42 while creating a restore point and updated the same to version 43.0 after some time, Windows will restore Firefox 42 when you restore using the selected restore point.