windows xp
   Firefox 44.0.2

Different PC than what you posted here with? System Details - ''posted to the right of your posting'' windows xp Firefox 44.0.2 Yet your UA shows User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; GWX:QUALIFIED; rv:11.0) like Gecko Are you running Firefox in a "Compatibility Mode" in Win7? ------------------- Since Firefox is crashing on startup, it would be nice to have some Firefox Crash Report ID's that you retrieve via the Explorer file system. 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 window 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. You can find more information and troubleshooting steps in the [[Firefox crashes]] article.