QuickBooks Error 6105 can occur when trying to access company files in QuickBooks Desktop. The error may be caused by various factors such as a change in the location of the company file, routine server maintenance, incomplete installation of QuickBooks, or outdated software.
What does QuickBooks Error 6105 means?
QuickBooks Error Code 6105 is an error that occurs when a user tries to open or access a company file in QuickBooks. This error is usually accompanied by an error message that says, “This is an invalid QuickBooks company file.”
Troubleshooting Steps for fixing QuickBooks Error 6105
This section illustrates the various steps that can aid readers in troubleshooting QuickBooks Error 6105.
Step 1: Change the File Name of the .TLG File

Right-click on the QuickBooks Desktop icon on the Desktop and select Properties.
Click on Open File Location.

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