Error 1718 msi was rejected by digital signature policy
I am getting this Error 1718 msi was rejected by digital signature policy when launching a application as a user.
This is happening on Windows 8.1 x64. I have read that on XP and Server 2003 a KB update was released by Microsoft but isn't relevant for 8.1 obviously.
Wondering if anyone has any advice please.
I was also wondering if it could have anything to do with Applocker i am currently exploring that avenue.
The application in question is a in house application and 65,716KB.
Any help is much appreciated.