On this page you can download the latest Hotfix for STEP 7 V5.6 SP2 / STEP 7 Professional 2017 SR2.
Installation requirements:
    STEP 7 V5.6 SP2
    STEP 7 Professional 2017 SR2
STEP 7 V5.6 SP2 or STEP 7 Professional 2017 SR2 must already exist or have been installed on your computer before the installation of any Hotfix.
Readme:
You can find additional information about the Hotfix in the attached Readme file. Also attached is a Readme file about the included OSS components:
    STEP 7 V5.6 SP2 HF5 Readme:  Registrierung notwendig  Readme_STEP_7_V5_6_SP2_HF5.rtf (79,4 KB)
    STEP 7 V5.6 SP2 HF5 OSS:  Registrierung notwendig  ReadMe_OSS_STEP_7_V5_6_SP2_HF5.htm (974,0 KB)
STEP 7 V5.6 SP2 HF5 (.zip):
 Registrierung notwendig  SIMATIC_STEP7_V56_SP2_HF5.zip (492,3 MB) 
SHA-256 Prüfsumme:
 Registrierung notwendig  SIMATIC_STEP7_V56_SP2_HF5.txt (1 KB)
Information about SHA-256 
https://support.industry.siemens.com/cs/document/109783146/download-hotfix-5-step-7-v5-6-sp2-step-7-professional-2017-sr2?lc=en-us