Requirements and remedies for installing STEP 7 version V5.5No.Requirements / Remedies

1Hardware requirementsPlease note that you need increased main memory expansion for STEP 7 version V5.5. Below are the requirements for STEP 7 V5.5. In Windows XP Professional your PC requires at least 512 MB RAM and a processor of at least 600 MHz (recommended memory expansion of 1 GB). In Windows Server 2003 your PC requires at least 1 GB RAM and a processor of at least 2.4 GHz. In Windows 7 your PC requires at least 1 GB RAM and a processor of at least 1 GHz (recommended memory expansion of 2 GB).

2Software requirementsSTEP 7 version V5.5 is released for the operating systems below: MS Windows 7 32-bit Ultimate Professional and Enterprise (standard installation) with or without SP1. However, the Windows XP modein Windows 7 is not released. *MS Windows 7 64-bit Ultimate Professional and Enterprise with or without SP1. *MS Windows Server 2008 R2 (64-bit) with or without SP1. MS Windows XP Professional SP2 or SP3 (32-bit). MS Windows Server 2003 R2 SP2 (32-bit) standard edition as workstation computer.The STEP 7 software is released for Windows XP Professional (32-bit). Installation in Windows XP Professional X64 (64-bit edition) is not possible.*STEP 7 V5.5+SP1 (or higher)Internet ExplorerYou need the Internet Explorer 6.0 (or higher).More information is also available in our FAQ on "Compatibility of STEP 7 versions with the MS Windows operating systems" in Entry ID:8250891.

3Operating systems not supportedWindows 95 / 98 / Me / NT / Windows 2000 and Windows Vista are no longer supported. Windows XP mode in Windows 7 is not released.

4Compatibility with other software productsInformation on this is available in our FAQ "Which SIMATIC software packages are compatible with which Microsoft Windows operating system and with STEP 7 V5.5?" in Entry ID:18734363.

5Memory requirementsSTEP 7 V5.5 requires between about 650 and 1.2 GB of free memory on your hard disk.The Windows operating systems supported require additional memory on the hard disk (typically disk C:) for the swap file, depending on the memory expansion available. You should keep at least twice the size of the main memory free. (Example: with a main memory expansion of 512 MB you need another 1024 MB of free memory on the hard disk for the swap file after installing STEP 7). Depending on the project size, you might need a larger swap file when copying an entire project, for example (twice the project size in addition on the hard disk). If the memory for the swap file is too small, errors might occur (or the program might even crash). Other Windows applications (MS Word, for example) running simultaneously with STEP 7 V5.5 also require additional hard disk space for the swap file.