Hii my name is Trinity Lan i am from the technical team. Sometimes when you try to open QuickBooks and it won’t open, it can leave you in a hopeless state. QuickBooks won’t open because of incomplete QB installation, outdated Windows, corrupted hard disk, damaged or missing QBWUSER.INI file, etc. To fix this problem you should first work on the causes mentioned above. In case the problem persists, even after checking the above things, you should visit our QuickBooks Help portal and read our QuickBooks won t open the troubleshooting guide. Alternatively, you can also contact us for any issue regarding your QB issues and let us fix it all for you in a jiffy.
https://www.quickbooksphonenumber.com/blog/resolve-quickbooks-wont-open-issue/