If you want to fix QuickBooks error message code 6000 77 using quick troubleshooting methods, then take reference from the linked article. If the error doesn’t fix, contact the certified QuickBooks expert’s team by calling us on our helpline number (1.800.579.9430).
Are you getting Intuit QB error message 6000 77?
Then, read the linked article carefully if you want to fix the error on your own using quick troubleshooting steps.
If the error continues, contact the certified QuickBooks expert’s team by dialling our helpline number (1.800.579.9430).
QuickBooks Error OL-393 occurs when you're linking your accounts to download your dated bank transactions into QuickBooks Desktop.
Temporary bank server time-out or data integrity issues with the company file may lead to this error.
Also, you can directly call our technical support team.