

This works with the latest version of Flash, so you don’t need to downgrade. You do not need to restart the browser (at least not when I tested this on OSX with Firefox) – Flash seems to pick these settings up next time you refresh the page.

Once this file is saved, hit refresh in your browser and your legacy web app should load. Obviously, you need to replace with the URL of your legacy app. # Pattern to enable Your Legacy Flash Web App:

# indicating which pattern it matched or that # but console output is written for each request # In preview mode, all requests go unblocked, # unless the url matches a pattern in the list. # Normally, the allow list blocks URL requests # Disable prompts to uninstall Flash Player This file needs to be replaced with the following content: # Disable Automatic Updates
