If you still have the installation file(s), frequently the easiest way to uninstall a "reluctant" program is to reinstall it first, which overwrites and gets rid of any corrupt files, and then uninstall it using the Control panel.

Just be sure that you choose the same (original) location for the reinstall.

Some programs that don't respond favorably to Control Panel uninstall may come with an "Uninstall" - sometimes with funny names like "Not Recommended.dll" or "Warning.exe" or other. Any such program should be in the main folder where the program was originally installed. The Control Panel removal attempt might have removed any such, so again a reinstall would be needed to get a clean copy of the "dedicated uninstall." A right-click on the file, and look at properties should tell you if you've found an uninstall.

The most common failure is due to corruption of the "installation .dll" file, that keeps a record of what was done during installation. Uninstalling just runs the list backward.

If any files have been moved or updated, the list may be wrong, files it names won't be found, and Control Panel thinks the file is "corrupt" when it's actually just obsolete.

John