How to install Wordfast Pro 4

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1. Double click on the downloaded MSI file and follow the installation wizard.


1. After downloading Wordfast Pro 4, double-click on the downloaded installer to open the installation wizard.

Mac installer icon

2. Drag the Wordfast Pro file onto the Applications folder.[1]

Mac installer window

3. Open a Finder window and, on the lefthand column, click on the Eject button under Devices to close the installer.


  1. If you get a message saying An older item named “Wordfast Pro” already exists in this location. Do you want to replace it with the newer one you’re moving?, click on Replace. If you click on Keep Both, you will have multiple installations of the same software and likely get confused. To be safe, you can always keep previous versions of the installer file in case you need to revert back to a previous version.

  • Thanks to Hyerim Ko and Terrence Lin for contributing to this article.