JM-Crypt encrypted file
File type: Encoded and encrypted file
A .jmck file is an encrypted file created by JM-Crypt, a Windows application for protecting sensitive data.
File type category:
Encoded and encrypted file
Date updated: October 4, 2026
Record marked as obsolete and not updated for a long time.
The .jmck file extension identifies data encrypted by JM-Crypt for Microsoft Windows. The file contains protected data and normally requires JM-Crypt and the appropriate decryption credentials to access its contents.
The JM-Crypt format is obsolete, so compatible software may be difficult to obtain on current systems.
On Windows, open the .jmck file with JM-Crypt, the software that created it. Decryption credentials may be required. Because the format is obsolete, JM-Crypt might not be available or compatible with newer Windows versions.
An encrypted .jmck file cannot normally be converted directly to another format. Use JM-Crypt to decrypt it first, then save or export the recovered contents in a format supported by the application that opens those contents.
Language