In the middle of urgent business meeting, my QuickBooks won't open company file. This is the most common error that can be appeared anytime. Due to the occurrence of this error code, my important task is on pending. I am trying to open QuickBooks company file, but I am not getting the success. There may be unexpected reasons of this issue. Actually, I am new to this accounting tool; hence I don’t have enough experience for it. So, I am going to share this error with all of you, guys. Can anyone provide simple tips to fix this error?