Notes about the EFP 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 EFP file type is primarily associated with 'Exchange Forms Designer' by Microsoft Corporation. Exchange Forms Designer is a high level messaging application development tool used to create electronic forms for common paper-oriented tasks. Templates are generally in the ...\Efdforms\Template directory.