: This is the simplest way to ensure all background processes are closed before you try the installation again. Force Quit Conflicting Processes :
Open (you can find it via Spotlight search with Cmd + Space ). Find any Adobe-related processes in the list. adobe error code 501
restart or a temporary disablement of security software. Consistent but annoying; make sure your users aren't running multiple Adobe processes during an update." Adobe Help Center For the Technical Fix-It Guide : This is the simplest way to ensure