Firefox Community Forum

I get the error msg. "Firefox is already running. Would You like to exit Firefox? Yes or No"

I enter Yes and Firefox starts normally. This usually happens after a Firefox update or sometimes when I exit Firefox normally. I use Windows 10 if that makes a difference.

I would appreiciate any hep. thanks Ed..

Firefox opens to yahoo.com then closes and another page opens saying: Unable to connect Firefox can’t connect to the server at report.error-report.com. When I open a new window it connects to yahoo.com.

I got so frustrated with not being able to reinstall Firefox because I kept getting the error message "Your Firefox profile cannot be loaded. It may be missing or inaccessible". So I deleted all the profiles after copying them to an external hard drive. Then I copied the file ending in.test from the Old Firefox data folder on my desktop to the AppData/Roaming/Mozilla/Firefox/ profile. Then I copied the biggest file ending in .default from the backed up Local profiles to the AppData/Local/Mozilla/Firefox/ profile. It doesn't matter if I delete or keep the Old Firefox data folder on my desktop, I still get the Profile Missing error message. What can I do, so my laptop would appear as if it had been powered up straight out of the box and never had Firefox initially installed or what do I do with my profiles to make them accessible?

Best topic is covered by all of the options, unfortunately! If I have done anything incorrectly it was done thru lack of tech savvy for which I apologize for. I have to go take care of the horses now, thank you for any help you may have.

I have been with Firefox for years as default browser but recently been having probs. It wont open from Start or my taskbar. Keeps going to New tab at top of screen. Tried reinstalling but still the same. What has happened?

latest update from 150.01 to 150.02 crashed compatibility error can't open firefox. error platform version 150.01 is not compatible with minver>=150.02. can't even open anymore

I was trying to do something with my bookmarks yesterday and I must have pushed the wrong icon. Firefox then became unavailable. I'm 88 years old and not fully at home with computer language. I tried Chrome, but it's not available like Firefox.

How can I resolve the failure to open because it can't find the XPCOM. I downloaded a new copy but the computer insists on using the older, faulty version to open files and it will not work.