Yes, I will tell you all about this error. Actually, this is the most common error occurs on the screen of QuickBooks user which restricts them to do further work and further access of QuickBooks. Generally, it freezes the system.
There are many solutions for Quickbooks won't open errors such as
updating Quickbooks version, correcting date and time, making internet connection strong and stable also do renaming of Quickbooks components.
https://quickbooksdiagnostictool.com/quickbooks-wont-open/