Adobe Connect pre-9.0.3 users can experience the following:

  • Even if Add-in is installed, the meeting opens in the browser and not in the Add-in.
  • Upon attempting to share screen, the following message appears:
Error launching Adobe Connect Add-in message

On-premise customers, using older versions of Connect 8, can experience the following:

  • Any Add-in-specific functionality (like screen sharing) starts the Lightning download for Add-in. However, the download still fails.
  • Installation of the Add-in from the Help menu in the meeting fails.


Starting with Adobe Connect 9.0.3, the Adobe Connect Add-in, on Windows, is compatible with Chrome browser version 25 running the default PPAPI Flash plug-in. If you are on Mac or on pre-9.0.3 Adobe Connect version, use one of the following workarounds:

  • Use supported versions of browsers, other than Chrome, if Add-in specific functionality is required in the meeting.
  • Disable the PPAPI Flash plug-in and enable the NPAPI Flash plug-in in Chrome as follows:
  1. Type chrome://plugins in the browser tab.

  2. Expand Details in the upper-right area of the screen, if needed (Figure 1).

    Figure 1

    Expand details in the upper-right area of Chrome plugin screen
  3. Click Disable for the PPAPI (out-of-process) Flash plug-in Type (Figure 2).


    Figure 2 (Windows screenshot; different for Mac OS)

    Check if Type: PPAPI Flash and Type: NPAPI Flash plugins are enabled
  4. Check if there is at least one NPAPI Flash plug-in listed below the PPAPI Flash plug-in. If it is, make sure at least one NPAPI Flash plug-in is enabled. Then, make sure to refresh the Connect meeting client tab in the browser.

  5. If no NPAPI Flash plug-in is listed on Windows, then install if from using Firefox or Opera browser. After installing it, make sure to refresh the Connect meeting client tab in the Chrome browser.


    Chrome updates usually take place automatically. After any Chrome update, PPAPI Flash plug-in is enabled and set as default. So it may be necessary to repeat the workaround.

Additional information

The default Flash Plug-in settings, since Google Chrome browser version 21 (on Windows) and version 23 (on Mac), prevent the Adobe Connect Add-In from launching. Chrome browser had earlier been shipping with only NPAPI Flash plug-in, which is compatible with the Add-in. However Chrome version 21 (on Windows) and Chrome 23 (on Mac) added a PPAPI (Pepper) Flash plug-in and made it the default. PPAPI Flash plug-in is not compatible with the Add-in. On Windows, Chrome stopped including the NPAPI Flash plug-in since version 22.

Although you can attend Adobe Connect Meetings without the Add-in, the Add-in is required for functionality like screen sharing and making offline recordings. While Adobe works on a solution, use the workaround below or use a different supported browser for your Adobe Connect Meetings if Add-in–specific functionality is required.

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