Closing a program that isn't open?

[Guest]

I cannot install Flashplayer because it keeps telling me to "Close Firefox", but Firfox isn't open.  I have tried opening it and then force quitting.

I'm on a MacBookPro, OSX

Also, how do I find out if anyone has answered my question?  Will I get an email, or do I have to keep coming back here, which takes about a zillion pokes.

thanks

MartiInChico

[pwillener · Accepted solution]

Maybe it is still running in the background?  Check with the Activity Monitor.

[jeromiec83223024]

Restart your machine, then immediately re-run the installer.

[brwe]

This finally worked for me, W10, Firefox browser, after tearing my hair out for a couple of hours!!

[isabellas82070957]

I'm having this same issue with Google Chrome.

[jeromiec83223024]

Chrome can be set to run in the background.  This is especially true if you're using chrome-based applications like Google Hangouts.  You can use task manager to kill any running Chrome instances, or find and exit those applications through the usual UI.