What to do if QuickBooks won’t open? Keep your Windows Admin User up-to-date at all times. You can solve the problem by installing the diagnostic tool. Fix the installation of the desktop. Turn off the antivirus program. Use Tools Hub to run Clean Install. QuickBooks Desktop should be removed. The installation directories need to be renamed manually.
Troubleshooting Tips: Fix the Quickbooks Desktop installation. Rename the TLG and ND files for the company file. Install Quickbooks Desktop with restraint. Disable hosting on all workstations. Install the latest version of QB on the desktop.