Before investing in any license path, it is crucial to verify system compatibility. STEP 7 V5.5 supports only Windows XP and Windows 7 32-bit operating systems, but not 64-bit versions. If you require 64-bit Windows or newer operating systems such as Windows 10 or Windows 11, STEP 7 V5.7 is the latest classic version that offers broader compatibility, supporting Windows 10/11 Professional and Enterprise in addition to Windows Server environments. For true 64-bit compatibility, migration to TIA Portal is necessary.