Firefox keeps crashing on startup

I had the same issue. Try starting Firefox in Troubleshoot Mode by holding Shift when launching.

We're sorry to hear that your Firefox seems to be crashing when you open it. Please perform the following steps to give us a crash report ID that helps us find out more about the cause of the crash. #On the keyboard, press '''[Windows] [[Image:Windows Key]] + [R]'''. This should bring up a ''Run'' box that contains a text field. #In that text field, type '''%APPDATA%''' and press Enter. An explorer window should open. #From that explorer window, double-click on the '''Mozilla''' folder, then double-click on '''Firefox''' and then on '''Crash reports'''. Double-click on '''submitted'''. #Now, you should see a list of files that contain reports. Go to '''View''' > '''Arrange Icons by''' > '''Modified''' to get the most recent files at the top of the window. #Open the most recent 5 files with a text editor and copy the IDs. #Paste each ID with '''bp-''' into the reply window on the forums. Thanks in advance! You can find more information and troubleshooting steps in the [[Troubleshoot Firefox crashes (closing or quitting unexpectedly)]] article.