S7 Distributed Safety STEP 7 V5.7 , you do not actually download a "V5.7" version of the safety package. Instead, you must install S7 Distributed Safety V5.4 SP5 alongside the S7 F-Configuration Pack

To use Distributed Safety on modern systems (Windows 10/11) with STEP 7 V5.7, you generally need both the main software and the F-Configuration Pack. Siemens SiePortal 1. S7 Distributed Safety V5.4 SP5 Update 2

Always restart before and after installing STEP 7 components to activate registry entries. Integrity Check:

• If you or your company holds a SIMATIC license or service contract, contact your Siemens account manager or technical support to request the V5.7 installer, license keys, and any required add-on packages.

Operating Systems: Compatible with Windows 10 (64-bit), Windows 11 (64-bit), and various Windows Server editions (2016/2019/2022).

If you are looking for the primary STEP 7 environment that supports V5.7, you can access the trial versions (21-day limit) here: STEP 7 V5.7 SP1 / Professional 2021 SR1 Trial Download STEP 7 V5.7 SP2 Trial Download 2. Distributed Safety Package