I case you are wondering that what has happened to your quicken software as you are facing the trouble of Quicken Won’t Open then surely you don’t need to panic at all. It requires a few ways to fix it. Restart the system once and then again launch the quicken software for reuse. You can also reinstall the system and its updated patch once again as the previous installation might be incomplete. Try accessing the quicken software without opening the data file. Also, you must disable the virus protector installed in your system. This way the problem can be easily fixed but if it still remains then do contact the quicken expert and professional for easy guidance.