Start | All Programs | Microsoft Visual Studio 2012 | Visual Studio Tools | Developer Command Prompt for VS2012 | Right click and "Run as administrator"


Right click and paste the following commands. Update the highlighted words to what you want to name the certificate.

Exclude the "-f" parameter on the  first run or the .pfx file won't get created.

MakeCert /n "CN=Anthony" /r /h 0 /eku "1.3.6.1.5.5.7.3.3,1.3.6.1.4.1.311.10.3.13" /e "01/16/2174" /sv Anthony.pvk Anthony.cer 
pvk2pfx -pvk Anthony.pvk -spc Anthony.cer -pfx Anthony.pfx –f

*Note the date format is the US standard MM/DD/YYYY *Note the "-f" parameter is used for overwriting an existing file

In the Visual Studio project properties select "Signing" click on "Select from File…"

Navigate to C:\Windows\System32 and select the certificate file (*.pfx) 

To learn more about the used tools

Makecert

http://msdn.microsoft.com/en-us/library/bfsktky3%28v=vs.80%29.aspx

Pvk2Pfx

http://msdn.microsoft.com/en-us/library/windows/hardware/ff550672%28v=vs.85%29.aspx

References:
https://bernhardelbl.wordpress.com/2012/03/20/create-a-non-expiring-test-certificate-pfx-for-clickonce-applications/