If you are using QuickBooks in a multi-user environment, then more than one user can access the company file at the same time if they have the necessary file access rights. An error that you might face while opening the company file is an error -6073, -99001 where you get an error message “QuickBooks is unable to open this company file. It may have been opened by another user” Error codes: (-6073, -99001). This article is intended to walk you through each step of error removal. Follow the complete article for detailed troubleshooting instructions.
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