"QuickBooks is unable to open this company file. It may have been opened by another user. You should ask that user to switch to multi-user so you can both use the company file at the same time. The file could also be located in a read-only network folder. If it is, ask your system administrator to make the file is accessible.
The Support site contains information about this type of error and how to resolve the issue. Go to the Support site to view an article about the error. If the article doesn't help you resolve the problem, contact Support for assistance.
Error codes: (-6189, -816)"
This error is usually caused by the company file's .TLG file:
Contact Intuit Support for assistance with fixing the .TLG file(s) or recreate them as needed.
To contact Intuit Support, please see the numbers listed below:
- Intuit - 866-340-7237
- Intuit Canada - 866-935-7237
If Intuit does return a solution that requires Summit Support's assistance, please submit a ticket and we will work with their instructions.