Most third-party uninstaller tools will include a registry monitor and a file monitor. Usually trial software will save their licensing information in a registry key or a file on the hard drive. If these two methods fail, you may see the next method. Most modern software have protection against this method. The software will continue to work as it uses the system date to see if the 30 day trial period is over or not. You can adjust your system clock to a earlier date after installing the software. The other workaround is to play with your system date and time.
Most modern software use advanced techniques and will not allow you to reset the trial version of the software even after re-installation. The easiest way to reset a trial version of the software is that you can uninstall it and then re-install it again. Reinstall the software/Reset Date and Time They will most probably entertain your request and give you some extended evaluation time. The best way to use the software in extended evaluation is to contact the software vendor and ask them for an extended evaluation time. This will help the developers keep the software up to date. It is always recommended to buy a software if you like it. Please note that we are suggesting these ways only for people who want to evaluate the software for more than 30 days and then buy the software.