If you are facing issues accessing your company file because of QuickBooks Error 6190, it must be because of the Incomplete installation of QuickBooks could lead to the error, System files have been infected by a virus or malware, QuickBooks files have been deleted either due to error or by the user, The registry files are missing or corrupted. For detailed instructions on fixing the error, follow the article linked here or dial +1-800-579-9430 for an expert's help resolving the issue.