Notes about the QBI file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The QBI file type is primarily associated with 'QuickBooks' by Intuit, Inc.. This is a temporary backup file that typically is deleted after the .QBW data file is closed. It is used to reconstruct the data file should the program crash.