There are distinct causes why QuickBooks won't open. To overcome the issue, you need to see the underlying reasons for the problem. You need to troubleshoot for the below conditions to comprehend the issue:
QuickBooks company file may be damaged
The company file must be corrupted.
Virus, malware, or trojan must have attacked your system. These malicious entities must have corrupted or damaged your files.
The same file must be shared or opened on a shared network.
You must be using the wrong methods to open specific files.
You must be using QuickBooks which must be incompatible with your operating system.
Causes of QuickBooks won’t open error
Several factors might lead to QuickBooks would not open error. It is required to consider all factors before beginning troubleshooting.
Your company name is very long.
Damaged or missing QBWUSER.INI file.
Your hard drive is corrupted.
QuickBooks Desktop installation is not functioning effectively.
Your Windows operating system is damaged.
Solutions to Fix QuickBooks won’t open Issue
Solution 1: Restart your system
Step 1: It is extremely important to reboot/restart your computer before you begin the process.
Step 2: Now, practice opening QuickBooks file again and check whether QuickBooks won’t open error is gone or still there.
*Try disabling your Antivirus program temporarily in case the problem continues to persist.
I hope this information will be helpful!
Mark Wilson