Web Adaptor setup will not start

[CassidyKillian]

I performed the upgrade from Server 10.1 to 10.2.  After the server install, I was going to perform the web adaptor install.  However, when I click on the Setup button on the main install page, it does nothing.  If I go directly to the Setup.exe for the install I get an error that says "This app can't run on your PC" "To find a version for your PC, check with the software publisher"

This setup is on a virtual machine running Windows Server 2012 R2.  I did not have the web adaptor installed on the 10.1 version.

[SherifMohammed]

Windows Server 2012 R2 support begins at 10.2.1 according to Esri.
Kindly, See this page:
http://resources.arcgis.com/en/help/system-requirements/10.2/index.html#//01510000007s000000

Under first table you will find this note:
"*IIS 8.5 and Windows Server 2012 R2 support begins at ArcGIS 10.2.1"

Thanks,
Sherif Ramadan