After you've uninstalled the program, there might still be some files hanging around. On a Windows computer, you'd want to dive into folders like C:\Program Files, C:\ProgramData, and the AppData folder under your user account. If you're using a Mac, you're going to look in the Library under Application Support and Preferences in your home directory. Any VPN PRO files you stumble upon in these spots should be deleted.
Now, if you're on Windows, there's this thing about the registry where old settings can linger and mess things up. You might need to clean it out with a registry cleaner, or if you know your way around, you can use the Registry Editor. Just be super careful, as deleting the wrong thing can cause more headaches.
After you've cleaned up, give your computer a quick restart to shake off any of the old settings or temporary files that might still be clinging on.
When you're all set to install the new version of VPN PRO, on Windows, make sure to right-click the installer and select "Run as administrator." This step makes sure the installer has all the permissions it needs. On a Mac, double-check that you have admin rights, or you might need to pull up Terminal and use some commands for the installation.
