App install - neverending scan cycle

Question

I am trying to install Samsung Pay while Sophos Free Antivirus and Security is running on my Samsung S7. 
 The Samsung Pay installer downloads and then Sophos tries to scan the .apk file. It states that the app is safe and then goes into a neverending loop of scanning the .apk file again and again. Please assist with this installation fault.

BrianRuckley · Accepted Answer

The issue was with Sophos. I uninstalled Sophos Mobile Security and Samsung Pay was able to install and function correctly. i then re-installed Sophos Mobile Security with no further issues. 
 Thanks for all the input guys.