Unable to open meetings with new Adobe Connect application on Firefox 64-Bit

As Adobe Connect meeting room does not open on Firefox 64-Bit, there are some workarounds to resolve this issue.


  1. Open a meeting on Firefox 64-bit browser (in flash).

  2. Click Share my Screen.

  3. Adobe Connect meeting application does not get installed or launched automatically.

  4. Manual attempts of installing and launching the application also fails.

  5. Sometimes the app is installed but does not get detected by Firefox 64-bit.

Error message like below appears in this situation:


Adobe Connect On-premise
Adobe Connect Hosted
Adobe Connect Managed Services (ACMS)
Firefox 64-bit Browser
Adobe Connect version 9.7 and higher


We have identified this as a known Bug with Firefox 64-bit browser. Bug #4087959 can be used for reference.


Following are some workarounds to resolve this issue:

  • Append?proto=true at the end of your meeting URL:  example:  https://my.adobeconnect.com/rahulmeeting?proto=true
  • Use another browser, Chrome, or I.E. and that works fine.
  • Install Firefox 32-bit browser and the meeting works fine.
  • Disable Flash in FireFox(64-bit). This prompts the user to launch the add-in/app.

Few other Troubleshooting alternatives/workarounds which could be tried:

  • Run %appdata%\Macromedia\Flash Player\www.macromedia.com\bin\adobeconnectaddin.exe as an admin.
  • Go to the exe, right-click, and choose the Compatibility tab and click Run this program as admin. FireFox then launches the app when invoked.

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