Your project path is too long or contains special characters (e.g., Chinese, Cyrillic, or @ ). Move the project to C:\Projects\ and rename it to simple ASCII (English) letters.
You need a Siemens Webpass or a registered account with a valid service contract. For non-contract users, downloading can be a chore. The file size is ~2.5 GB, and Siemens’ servers are notoriously slow on weekends. Pro tip: Use a download manager. Simatic Wincc Flexible Smart V3 Sp2 Download
: Registered customers can often download trial versions of SIMATIC software for a 30-day testing period from the Siemens Support site . Your project path is too long or contains
You likely have an older version of "CodeMeter" or "Sentinel" drivers from another software. Uninstall any third-party license managers, then repair the WinCC installation. then repair the WinCC installation.