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

.P2P расширение

Тип файла FolderShare Placeholder File
Разработчик Microsoft
Категория Прочие файлы

Описание формата файла

Shortcut to a file used by FolderShare, a Windows Live computer synchronizing service; contains a reference to a specific file and is used in place of the actual file; most often seen when On Demand Sync is active; double-clicking a P2P file within FolderShare should download the actual file to your computer.

NOTE: The term "P2P" is also short for "peer-to-peer," which refers to Internet file sharing programs. Most P2P programs do not use the ".p2p" file extension.

Программы, которыми можно открыть файл .P2P

MacOS
Microsoft FolderShare Описание
Windows
Microsoft FolderShare Описание