A file with the .dm file extension is known as a DRM delivery message. The DM file extension is associated with Paradox, a relational database management system sold by Corel Corporation, which is part of some editions of Corel WordPerfect Office suite. DM file encoded with DRM (Digital Rights Management) copy-protection is used by some cell phones for ringtones and other media clips.
File extension errors generally occur when the appropriate program is not installed in your system. Scan your system to identify and fix DM file extension errors.
Trouble opening DM files on Microsoft Windows?
Advanced File Optimizer
Need help opening a DM file? Advanced File Optimizer will do this for you. Opening a DM file only takes a few clicks and is very easy, even for novice users.
Compatible with Window XP, Vista, 7, 8, 8.1 and 10