Configuration notes:
The following table shows you as of which version of STEP 7 there is compatibility with which Microsoft Windows operating system:
 

STEP 7 version	WIN '95	WIN '98	WIN ME	Windows NT 4.0 + SP3	WIN 2000	WIN 2003 Server	Windows XP Professional 3)	Windows Vista 32 Bit Ultimate and Business
V 3.1	X	-	-	-	-	-	-	-
V 3.2	X	-	-	X	-	-	-	-
V 4.01	X	-	-	X	-	-	-	-
V 4.02	X	-	-	X	-	-	-	-
From V 4.02.5	X	X	-	X	-	-	-	-
V 5.0 incl. SPs	X	X	-	X	-	-	-	-
V 5.1	X	X	-	X	-	-	-	-
V 5.1 incl. SPs	X	X	X1)	X	X1) 2)	-	-	-
V5.2 incl. SPs	X4)	X5)	X	X6)	X7)	-	X9)	-
V5.3 incl. SPs	-	-	-	-	X8)	X11) 12)	X10)	-
V5.4 incl. SPs	-	-	-	-	X13)	X14)	X15)	X16)

¹⁾ Only with installation of CD "STEP 7 V5.1 incl. SPx". 
²⁾ As from STEP 7 V5.1 incl. SP2 you require SP1 for MS Windows 2000.
³⁾ No support planned from MS Windows XP Home.
⁴⁾ MS Windows 95b or MS Windows 95 OSR2 required for OEM versions.
⁵⁾ MS Windows 98 SE (Second Edition) required.
⁶⁾ SP6a for MS Windows NT 4.0 required.
⁷⁾ At least SP1 for MS Windows 2000 required.
⁸⁾ MS Windows 2000 Professional at least SP3 required.
⁹⁾ MS Windows XP Professional SP1 recommended.
    Not released for MS Windows XP Professional SP2.
¹⁰⁾ MS Windows XP Professional SP1 or SP1a required.
     For MS Windows XP Professional SP2 you require STEP 7 V5.3 SP2.
     Not released under MS Windows XP SP2c.
¹¹⁾ STEP 7 V5.3 incl. SP2 is not enabled for use in
    MS Windows Server 2003 incl. SP1.
¹²⁾ MS Windows Server 2003 as workstation computer, STEP 7 V5.3 SP2 required
¹³⁾ MS Windows 2000 Professional SP4 required.
     Not released for STEP 7 V5.4 SP4.
¹⁴⁾ MS Windows Server 2003 standard edition and
     MS Windows Server 2003 SP1 standard edition as workstation computer.
     For STEP 7 V5.4 SP4 Windows Server 2003 SP2 is required.
¹⁵⁾ MS Windows XP Professional SP1 (or SP1a) or SP2 required.
     For MS Windows XP Professional SP3 you require STEP 7 V5.4 SP4.
     Not released under MS Windows XP SP2c.
¹⁶⁾ As of STEP 7 V5.4 SP3. STEP 7 is not released under MS Windows
     Vista Home Basic or Premium.

Information on other STEP 7 products is available in the compatibility list of your STEP 7 installation. Entry ID: 18734363 Information on compatibility of Windows languages is available in Entry ID: 23568401 (Point 4) and 22635865.

Note on Windows 2000 Server:
STEP 7 is not released for MS Windows 2000 Server.

Note on Windows XP:
STEP 7 is not compatible with the 64-bit version of MS Windows XP Professional.

Keywords:
Compatibility list, Compatibility, Compatibility matrix