Connect on macOS Stops Working after Upgrading from 10.13 to 10.14

Users upgrading macOS from 10.13 (High Sierra) to 10.14 (Mojave) are encountering issues with IBM Aspera Connect.  After upgrading, the FASP protocol registration no longer works correctly, and Connect cannot be used with any browser.


After upgrading, when opening a website that uses Connect, a blue banner appears indicating it's trying to launch Connect. The blue banner fails to detect or launch Connect, even if Connect is installed or running, and prompts you to download and install Connect.


Depending on your browser, a dialog may appear informing you there's no application to open the link or URL.


In AOC, if you dismiss the banner and attempt a download, you may see a notification that says "Downloading package" but no transfer starts.

How to Fix

  1. Go to the location where your Connect application is installed, typically:
    Macintosh HD > Users > username > Applications
    For system-wide installations, the location is typically:
    Macintosh HD > Applications

  2. Right-click on the Aspera Connect application and select Show Package Contents:


  3. From the package contents screen, navigate into the Contents > Resources folder.

  4. In the Resources folder, find and run IBM Aspera Launcher.  This is a daemon that runs and then quits.  This fixes the the protocol registration, and needs to be done only once.  After running IBM Aspera Launcher, web pages are able to launch and use Connect normally.


  5. If your browser is already open when running IBM Aspera Launcher, refresh the page for the changes to take effect.




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