Notes about the WDI 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 WDI file type is primarily associated with 'Pension Administration System' by DATAIR Employee Benefit Systems, Inc.. Also applies to Defined Contribution/401(k) Plan Administration System. Contents and format may vary according to task.