Issue

You receive the message "The MediaSeal decryptor tray is already running, please check your system tray, or alternatively, the MediaSeal decryptor could be running as a headless system service.

Cause

MediaSeal Decryptor is already running and only 1 instance is permitted to run at a time.  You are trying to open MediaSeal Decryptor when it is already running.  The application may be running as a headless service or under a different user account.

Resolution

If your MediaSeal is already running, please check if the application is visible on your taskbar, near your system clock.  The icon looks similar to the following:

If you are trying to open encrypted files you have received, please refer to the guide How do I open/access my MediaSeal encrypted files?

If the MediaSeal icon is missing from your taskbar, please verify that MediaSeal isn't already running on another account or as a headless service on your computer.