Simatic Step 7 V5 5 Sp2 |top| Download Fixed Work

If the installation hangs at 99% on "Registering Modules," do not panic. Press Ctrl+Alt+Del , open Task Manager, find msiexec.exe processes, and wait up to 20 minutes. This is a known timing bug.

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You can obtain STEP 7 V5.5 SP2 from:

Siemens no longer offers a trial for V5.5. However, if you purchase a used license dongle (USB license key) on eBay, Siemens support will typically grant you download access to the software if you provide the license number. If the installation hangs at 99% on "Registering

This is the first and simplest thing to try. This is the first and simplest thing to try

V5.5 is not officially supported on Windows 10/11 . If you must use these OSs, it is highly recommended to use a Virtual Machine (VM) running Windows 7 .

The single biggest reason for installation failures and the search for a "fixed" version is compatibility. STEP 7 V5.5 SP2 was .