Notes about the VFB 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 VFB file type is primarily associated with 'Outlook' by Microsoft Corporation.
Internet Free/Busy (IFB) is a feature of Microsoft Outlook that allows you to see when others are free or busy so that you can efficiently schedule meetings.