This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Deleting FF allowed my WiFi printer to start printing, Why?

  • 1 reply
  • 1 has this problem
  • 3 views
  • Last reply by Scribe

more options

I deleted FF because it was using almost 100% of my cpu (running 3 sessions at the same time) As soon as I finished uninstalling FF all the items in the printer que started printing! I reinstalled FF and my printer problems went away but FF is still running multiple times and using almost all my cpu. Help - HELP please

I deleted FF because it was using almost 100% of my cpu (running 3 sessions at the same time) As soon as I finished uninstalling FF all the items in the printer que started printing! I reinstalled FF and my printer problems went away but FF is still running multiple times and using almost all my cpu. Help - HELP please

All Replies (1)

more options

Hi, not sure what was happening with the printer, but that sounds like Multiprocess - which is normal. However, you can try disabling it: Type about:config into the address bar, press Enter, accept the warning, scroll down and look for browser.tabs.remote.autostart and browser.tabs.remote.autostart.2 If either or both exist, double click on either or both to change 'Value' from True to False, then restart Firefox. If there is no improvement, double click the entries again to change back to True. If that was better, try just reducing the number of processes from the default 4. To do that: In about:config look for dom.ipc.processCount and right click > Modify to enter a number lower than 4 (the highest number that works is best) then restart Firefox. More - Configuration Editor for Firefox.

If your question is resolved by this or another answer, please take a minute to let us know. Thank you!

Modified by Scribe