Please restart your computer and then delete the folders. You should be able to. Once you have done that, restart your computer one more time and proceed with the installation.
I just purchased Real 2020 plus upgrade, tried to install and it just hangs, never completes. I tried to uninstall real player and reinstall, but the uninstall also hung.
Per the support site, I tried to delete the program folder, but was unable as it said it was in use so could not remove.
Need some help to get this going.