If you’re using Mozilla Firefox for logging into a web-based enterprise resource (such as Panopto) and the browser crashes, you can try going to Help > Troubleshooting Information > and then click the Refresh Firefox button found under the heading “Give Firefox a tune up.”
However, if this does not fix the problem, you’ll need to completely remove Firefox and all settings files.
Use a program like Clean My Mac to thoroughly remove Firefox and all program settings. Then install it again. This will fix many website usage issues. However, any related web data data, such as cookies and saved passwords, will be removed.
Below is a screen shot of the Clean My Mac Uninstall utility. The related Firefox system files have been identified. Click the image for a larger view. The software conveniently finds and removes the Firefox settings files.