File Extension Library


.ZMD File Extension

  • Developer by: Check Point Software Technologies Ltd.
  • Category: Various data Files

What is an .ZMD file?

.ZMD file extension is created by Check Point Software Technologies Ltd.. .ZMD has been classified as Various data Files.

.ZMD is ZoneAlarm Mailsafe renamed OCX data

The zmd file extension is associated with ZoneAlarm, a personal firewall software, originally created by Zone Labs and currently developed by CheckPoint Software Technologies LTD.

One of ZoneAlarm features is MailSafe, which detects e-mail attachments and warns the user about their presence. When a potentially dangerous attachment is detected, the program quarantines the file with simple renaming of its original file extension, so it breaks the common program association function in Windows and prevents such files from being executed (or launched via associated program).

A file with zmd file extension originally had ocx file extension (ActiveX control file). Simple renaming will restore the Windows associations with such file, however it is not advised, unless you are absolutely sure it safe to do.


How to open:

You can rename the ZMD file extension back to OCX and work with the file normally. This can however be potentially dangerous, because the file was quarantined for a reason. So always re-check it with your anti-virus or anti-spyware programs before you rename the files.

How to convert:

Conversion to other formats is not possible.

How to Open .ZMD file on different platforms

Open .ZMD File on Windows

  • Right-click a .ZMD
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .ZMD file and Select check box "Always use this app to open .ZMD files" Press "Ok"

Open .ZMD File on Mac

  • Right-click (or Ctrl + Left-click) the .ZMD file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .ZMD File on Linux

Right click on the .ZMD file, choose "Open with" and select a program from the list above

Open .ZMD File on iPhone

Select a file. If you don't see an application to open the .ZMD file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .ZMD File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .ZMD files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .ZMD files

  1. You need to update the application that you normally use to open .ZMD files. Only the latest version of the software supports the current .ZMD file format
  2. You need to check the .ZMD file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)