The utility keeps a list of every file it sees the program add and every registry change it sees the program make. These tools may also watch the program when it runs for the first time, checking what it does during first startup.

When you use a utility such as the widely-known Revo Uninstaller, it generally runs in the background and watches what an installer does when it installs the program. Third-party uninstallers attempt to exercise control over the uninstall process, removing what the official uninstaller misses. Antivirus programs often run into this problem because they integrate so deeply with the system. That’s why these antivirus developers offer dedicated removal tools that you can download and run to really purge the program’s files from your system. For example, uninstalling Norton or McAfee antivirus from your Control Panel may not remove everything from the system. Many antivirus programs have a problem uninstalling in the normal way. Third-Party Uninstallers For Specific Programs However, uninstallers don’t always work this well and may only remove some of the files, settings, libraries, and services they installed. In an ideal situation, the uninstaller will clean up everything the program added to the system and leave the system in a fresh state. When a program launches, it may make additional changes to the system’s registry and future updates may add additional files elsewhere on the system.Įach developer creates their own uninstaller for their program. Some programs that need to integrate more deeply with the system may dump DLLs and other files into the Windows folder or install system services. They’ll also add information to the registry.

Typically, installers will create a directory in Program Files as well as scatter shortcuts around the system. Instead, the installer is free to do whatever it wants to your system. Win Booster Free allows you to clean common system and app junk files, re move shortcuts that refer to invalid locations, empty Recycle Bin instantly, and re move unused empty folders. Top Software Keywords Show more Show less

move data to another database or system.

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