If you have clicked multiple times on the QB icon, sometimes your QuickBooks won't open, you will need to give the application enough time to let it open. If still, your QuickBooks does not open after several minutes, then download and install the QuickBooks tool hub on your computer and open it. After that, click the option program problems and click quick fix my program. The tool will itself diagnose and fix the exact problem, and if there is still an issue, then you must contact the QuickBooks support number.
Press and hold the Ctrl key, then double-click the QuickBooks Desktop icon. Important: Don't release the Ctrl key until you see the "No Company Open" window unless QuickBooks freezes or gives you an error. Select a company file, then choose Open.
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People who use their service know how they manage the support work. I get a chance to work with australian essay writing where they mention few times about Quickbook work and how they handle.
Due to the company files get corrupted or damaged. It might be the file is already been opened on another system using multi-user network. May be you are using the wrong method to open the file. Report issue with the company file.
Regards,
Caleb