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WinCC OA 3.18 was officially announced in spring 2021 and introduced several breakthrough features that transformed SCADA system design:

Verify the patch level:

Downloading patched software, including WinCC OA 318, may seem like an attractive option for those looking to avoid the costs associated with purchasing a legitimate license. However, this approach poses significant risks to individuals and organizations.

If any check fails, consult the (downloadable from the same SIOS page) or open a ticket with Siemens Support (reference your license number and the exact error message).

The script automatically backs up the previous bin and lib folders, then overwrites them with the patched binaries.

Enforce Secure Information Distribution (MX Proxy encryption) within the project configuration: