This error may occur because QuickBooks Quick Startup enables QuickBooks to load your company file faster by leaving the QuickBooks application process (QBW32.exe) running within the background
If you're unable to open the corporate enter QuickBooks,especially when QuickBooks is running under multi-user mode, then there could be possibilities that the corporate file is in use by another user or application. When this happens, QuickBooks displays “Company enter Use QuickBooks” and you would possibly get frustrated, but it’s not time to panic yet. Resolving the error requires a touch of troubleshooting, and there are several ways to urge obviate this error message. For more info contact now- 1-855-481-5338. Visit- https://accountingerrors.com/quickbooks-already-company-file-open/
