Hello 

I'm trying install wincc 7.3 on windows7 Ultimate, but during installing, stay in step ' SQL Server 2008 R2 Standard Edition SP2 ( Wincc ) '. I waited for hours but installing don't work and stayed this step. Does anyone know what is the problem?

Thank you

Hi pouria89,

Have you previously installed Wincc in this computer? When WinCC is removed , the "WinCC" SQL server instance remains installed and must be removed manually for licensing reasons. 

Also, you should check that your system meets the hardware requirements to perform the installation of WInCC 7.3: Hardware Requirements for the Installation

I hope this helps you! 😊