Install only what you have a legal paper license for (if in production). For testing, install minimal keys to avoid conflicts.
Check the boxes for the specific licenses (e.g., "Step 7 Professional"). "Install Short" "Install Long" simatic ekb install 2012 download install
The "2012" version specifically caters to software suites from that era, such as and Simatic Net v8.1 . Download & Installation Basics Install only what you have a legal paper