Hi Andrew,
What’s the detailed problem phenomenon? Does it always prompt to download and install appeonbrowser.exe when Sophos is enabled?
Let me explain how a multi-browser application works first.
On a clean machine, appeonbrowser.exe will be downloaded from the web server (C:\inetpub\wwwroot\appeon\weblibrary_ax\crossbrowser) first. After it’s installed, the AppeonMultiBrowserLauncher.exe, AppeonMultiBrowser.exe, etc will be released to user path %localappdata%\Appeon Multi-browser Plug-in.
The AppeonMultiBrowserLauncher.exe will be started as a service (use port 9056/11056) that listens for requests from multi-browser applications. When a user attempts to access a multi-browser application through a browser, a request is sent; and if there’s no response (meaning AppeonMultiBrowserLauncher.exe is not running), appeonbrowser.exe will be downloaded from the web server (C:\inetpub\wwwroot\appeon\weblibrary_ax\crossbrowser) again, so please don't end AppeonMultiBrowserLauncher manually.
For your issue, please check if the security mechanism will end the AppeonMultiBrowserLauncher.exe. Please check if the AppeonMultiBrowserLauncher.exe is running when the issue happens.
Some Firewall software (such as Sophos) intercepts port 9056/11056 which makes the PowerServer application not able to run on Chrome/Edge/Firefox. Please have your IT help to check and set it to not intercept the IPs and ports below:
Run application with http connection: http://127.0.0.1:9056
Run application with http connection: http://localhost:9056
Run application with https connection: https://127.0.0.1:11056
Run application with https connection: https://localhost:11056
Regards,
Kai