Cannot enable strong name verification skipping on Server 2012

Lost sources for a signed dotnet assembly. Getting the infamous: Strong name validation failed error "0x8013141A" on Windows Server 2012.

Tried to enable verification skipping but the system keeps reporting the failed validation error.

Steps taken:

Running the sn.exe -Vr *,* command tool (both x32 and x64) added the following registry keys:

HKLM\SOFTWARE\Wow6432Node\Microsoft\StrongName -> *,* HKLM\SOFTWARE\Microsoft\StrongName -> *,*

Works perfectly on the development Win 8.1 / VS 2013 machine, but Windows Server 2012 seems to ignore the registry keys.

Also checked access for the user account running the application to the registry keys which indicates read access.

Scoured the internets for days now, any insights are highly appreciated?

Perhaps another way to disable the verification check?

Self answer. Executable had a config file containing:

<NetFx40_LegacySecurityPolicy enabled="false"/>

It appears to take precedence...