Firefox Community Forum

I cannot get into Firefox due to an error message that keeps coming up. Your Firefox profile cannot be loaded. It may be missing or inaccessible.

I have tried deleting and reinstalling it, but it didn't really uninstall completely. I have tried a few suggestions from online, which didn't work. I also tried right clicking on the Firefox symbol and went into some of the different options, but nothing worked for me.

When I click the firefox icon on my desktop, I cannot open firefox because it says Cannot transfer data from s.aolcdn.com

yesterday my email wasn't opening links and then Firefox acted strangely so I cleared the cache. (I'm on windows 11) Today when I clicked on the app icon it created a shortcut instead of launching Firefox. What is going on? I have used FireFox as my default browser for the past 15 or more years and I don't want to switch to Chrome or MS Edge.

I was able to open Firefox by going to the app under settings - but that is not how I have done it before.

Any thoughts as to what is happening?

My Mozilla Firefox browser is not working. It does not open when I try to start it. I have restarted my computer, but the issue still persists. Please help me fix this problem.

I have an app showing on my desktop. It does nothing. I would like to be able to use my previous desktop for using firefox. If that is not possible. I would simply like to use.

I had been using the Mozilla Firefox VPN for a few weeks, but now it will not launch. I sign in without a problem but when I click on the VPN icon on the toolbar, nothing happens. I just get the pop-up to try the VPN and "Get Started" (see attachment).

Please advise.

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?

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