There are times when QuickBooks experience trouble because at the end of the day it is simply software. If you encounter QuickBooks Won't Openerror, then understand that there are certain reasons associated with the error. There are some of the common errors that are listed beneath:
Corrupted hard disk
Damaged or missing QBWUSER.INI file
The company file name is too long
QuickBooks Desktop is installed incorrectly
The operating system is not the latest version