Если знаете букву, на которую начинается нужное расширение - выберите ее.

.FDM расширение

Тип файла Exchange Forms Designer Form Message
Разработчик Microsoft
Категория Файлы данных

Описание формата файла

Electronic form created with Microsoft Exchange Forms Designer, a form development application; contains input fields that can be filled out by users; may be distributed to multiple users via Microsoft Exchange Server.

To create an FDM file, first select Options в†’ Tools. Then click the "Microsoft Exchange Server" tab and press the "Manage Forms" button. Select a form from the list box and click "Save As..." This will allow you to save an FDM file.

To install an FDM file, open the same "Manage Forms" window as above and click "Install." Then browse to the FDM file you would like to install and click "OK."

Программы, которыми можно открыть файл .FDM

Windows
Microsoft Exchange Forms Designer Описание