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.