If you have the files but the installation is failing, try these common "fixes" reported by the community:
: Requires all TIA components (Step 7, WinCC, Startdrive) to be at the exact same version to function. SINAMICS Startdrive V12 SP1 : Available for drive commissioning within the TIA environment. Key Compatibility & "Fix" Notes Tia Portal V12 Sp1 Download Fixed
Even the official installer will fail on modern Windows 10/11 (builds 1909+ and 21H2+) due to obsolete prerequisites (.NET 3.5, MSXML 6.0, Visual C++ 2010 redist). Here’s the proven “fix” sequence: If you have the files but the installation