I need your valuable advice to install the Step 7 v5.6. exe file like TIA? or problem with the windows version? According to software requirements, step 7 v5.6 needs Windows 10 Pro (1607 version), but my one is the latest and its windows 10 pro (1803 version). on DVD, license key on USB flash drive, Class A, 5 languages (de,en,fr,es,it), executable in Windows Server 2008 R2 SP2, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows 7 SP2, Windows 10 Professional, Windows 10 Enterprise Reference HW: S7-300. I don't know what is the problem with the STEP 7 v5.6? Do I need any other supporting files along with. SIMATIC S7, STEP 7 V5.6 SP2, Floating License for 1 user, E-SW, SW and docu. But I have already installed TIA v14 (Trial version) on my laptop and its working fine. But when I open with Step 7 V5. All are set to 'CPU-oriented unique message numbers. I have also checked all CPUs / their S7 program folders. But after sometimes later it shows this error message 'The following program could not be installed: Step 7 v5.6' and stop installation. And I did already perform 'Save as' with reorganization. exe file from the Siemens website () and tried to install it. I tried it for both Windows 10 Home and Windows 10 Pro (version 1803). Recently I tried to install STEP 7 V5.6 on my laptop. Produktkatalog Siemens Industry - Automatisierungstechnik - Automatisierungssysteme - Industrie-Automatisierungssysteme SIMATIC - Software fr SIMATIC Controller - STEP 7 V5.