39397: MassTransit: Web Client Plug-In Compatibility with 64-bit Versions of Windows and Mac OS

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Last update: 19-05-2021


MassTransit Server is supported on Windows 64-bit platforms. Currently, versions 7.0.1 and later of the MassTransit Web Client plug-in (available for the latest MassTransit HP 7.0.1 and later Servers) is supported for Safari in 64-bit mode but it is not supported for Internet Explorer running in 64-bit mode. MassTransit Web Client plug-ins prior to version 7.0.1 are not supported for Internet Explorer and Safari browsers running in 64-bit mode. However, you can use the MassTransit Web Client plug-in on a 64-bit operating system by running the browser in 32-bit mode.

If you do not want to switch your browser to 32-bit mode and the HTTP transfer method is available on the server, you can use it to transfer files with the MassTransit Web Client. To use HTTP click, the “Switch to use HTTP” link on the Send Files or Download Files page. For information about how to configure the HTTP transfer method, see the "Windows Web Configuration Instructions" document on the MassTransit Latest Releases page.

If you are using Mozilla Firefox, you shouldn’t have any problems with MassTransit Web Client on 64-bit Windows and Mac, since all current versions of Firefox released by Mozilla are 32-bit.


To use MassTransit Web Client 7.0.1 or later via Internet Explorer on 64-bit operating systems, you must run Internet Explorer in 32-bit mode. If you use MassTransit Web Client prior to version 7.0.1, you must run Internet Explorer or Safari in 32-bit mode. The 64-bit platforms of Window and Mac have both the 32-bit and 64-bit versions of Internet Explorer and Safari available.

Set Internet Explorer 10 to run in 32-bit mode on 64-bit Windows

By default the Internet Explorer 10 process will run in 64-bit mode, however you can set the tabs to run in 32-bit mode by disabling Enhanced Protected Mode.

  1. Open Internet Explorer for the desktop.

  2. Select the Tools Tools button, and then select Internet Options.
  3. On the Advanced tab, under Security clear the Enable Enhanced Protected Mode check box.

  4. Click OK. You'll need to restart your PC before this setting can take effect.


Set Internet Explorer 8 to run in 32-bit mode on 64-bit Windows

The 32-bit version of Internet Explorer is available in the Start menu. Commonly, the 32-bit Internet Explorer is the default browser. However, some programs will automatically launch the 64-bit version of the browser. To check which version of Internet Explorer is currently running open the Help menu in IE and select About Internet Explorer. If you are running the 64-bit browser, it will say “64-bit Edition“ after the version number. In this case, close Internet Explorer and:

  1. Go to the Start menu->All Programs
  2. Run the 32-bit version of the browser by clicking on the Internet Explorer application.

Set Safari 5 to run in 32-bit mode on 64-bit Mac OS

To run Safari 5 in 32-bit mode:

  1. Quit Safari if it is running.
  2. Open Applications.
  3. In Applications, highlight the Safari application and press Command (Apple) key+I, or open File->Get Info.
  4. In the Safari Info window, mark the Open in 32-bit mode check box and close the window.
  5. Restart Safari.

Now, you can download the MassTransit plug-in for the Web Client and use it to transfer files.

For more information about the MassTransit Web Client plug-in of MassTransit 7, please refer to the Web Client User Guide.