Saturday, January 30, 2016

InstallUtilLib Error 1001 Unknown error may see by launching custom setup package (for example, create with Visual Studio 2015 and Microsoft Visual Studio Setup Projects extension).
There are numerous web articles - even marked as [Solved] - for different scenarios.
One - not covered yet - was hit when we launch setup built with .NET Framework 4.5.2 on the platform having 4.5 or 4.5.1.
Once we updated platform with 4.5.2 version of .NET Framework the setup executed successfully.
So check twice the requirements of the setup package and currently installed framework version - neither the setup nor operating system will do that for you - and enjoy!