Tracking changes in Windows registry
Solution 1:
Process Monitor allows you to monitor file and registry activity of various processes.
Solution 2:
Can monitor registry changes made by specific program.
https://www.nirsoft.net/utils/reg_file_from_application.html
UPDATE: Just download NirLauncher (which includes all applications from NirSoft). It is one of the best additions to your Windows toolbox. https://launcher.nirsoft.net/