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Instalation Tia V15.1 failed due installed WinCC unified SCADA

4/4/2025 2:29 AM	Rate (0)
Robin Hud Experienced Member Joined: 4/17/2019 Last visit: 12/15/2025 Posts: 76 Rating: (2)	Installation Tia V15.1 failed due installed WinCC unified SCADA. According the error message I have vie Control panel launch the uninstallation of Siemens Totally integrated automation portal and then follow the wizard. The first problem is that I have currently installed three TIA portals V16.V17,V18. I does not say which of them is making the problem. I have tried to launch uninstallation all of them. But in none case it offer to deinstall any SCADA. It offer to uninstall complete WinCc only. What could I do? Attachment Screenshot 2025-04-04 035738.png (184 Downloads)

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4/4/2025 10:05 AM	Rate (0)
JimHalpert Joined: 7/11/2024 Last visit: 12/10/2025 Posts: 200 Rating: (27)	Hello Robin Hud As a general rule, there can only be one program that allows SCADA architectures on the same computer (except v19). In the Delivery Release of each software you can check the parallel installation requierements. For example, for V15.1: Delivery Release SIMATIC STEP 7 Professional / Basic V15.1 I would recommend you to use Compatibility Tool for Automation and Drive Technology to verify the compatibility between all of them. Also, make sure to use separate installation directories to avoid conflicts and to perform the installation with admin rights. Good luck!
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This contribution was helpful to 1 thankful Users Robin Hud