Server 2012 R2 and SharePoint 2013: The tool was unable to install Application Server Role, Web Server (IIS) Role

WTF. I spent two days trying to figure out this issue and finally I went digging into %WINDIR% to find my answer. I was trying to run the Prerequisite Installer for SharePoint 2013 on Server 2012 R2 but I kept getting the error in the title line The tool was unable to install Application Server… Continue reading Server 2012 R2 and SharePoint 2013: The tool was unable to install Application Server Role, Web Server (IIS) Role