Hello,

I have to install SP1 of Wincc V7.4 in a virtual machine running Wincows7 Pforfesional/Ultimate with Wincc V7.4 already installed.  Do I have to first unistall V7.4 to install V7.4 SP1? Or the installation includes the uninstallation of the previous version? I don't know whether the insallation files were downloaded from Siemens or copied from the Original CD.

Thanks in advance.

Diego.

Hello Diegomb,

You should have WinCC V7.4 installed and run the WinCC_V7_4_SP1.exe file. 

At this link you could download it:

Service Pack 1 for WinCC

https://support.industry.siemens.com/cs/ww/en/view/109746038

Best Regards,

CGA81

Thank you CGA81.

Regards.

Diego.