When opening your QuickBooks company file, you receive an error code: "-6000, -78". This can affect all files including sample files.
To resolve this error, Intuit recommends multiple solutions for this problem. Please follow them in the order shown for best results.
Important: Some of these steps are technical in nature and may be best performed by a qualified IT professional or your computer manufacturer.
Solution 1: Reinstall using a Clean Install.
Solution 2: Toggle UAC On and OFF.
Solution 3: Perform a System Restore to an earlier point in time before the issue occurred.