You can use a registry cleaner application to check and fix registry errors on your PC. Popular registry cleaner applications include CCleaner, Wise Registry Cleaner, GlarySoft Registry Repair, and Auslogics Registry Cleaner. Be sure to only use a reputable registry cleaner so that you don’t risk damaging your operating system. After downloading and installing the tool, you should run it to scan your entire system for any issues. Once it has identified any potential problems, it should give you an option to fix them.