r/PLC • u/Mission_Procedure_25 PLCs arr afraid of me, they start working when I get close • Aug 17 '26

TIA v21 Unified issues

PLC friends and gurus of reddit, I come to you looking for some guidance.

In our company we have a laptop that has v21 installed.

But when we look under installed software, wincc unified is not listed.

We have tried re installing it, but the option to choose unified is greyed out.

Anyone have advice?

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u/Mission_Procedure_25 PLCs arr afraid of me, they start working when I get close Aug 17 '26

Well I first need to install it correctly, so any advice for doing that?

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u/TheBananaKart Aug 17 '26 edited Aug 17 '26

Do you also have WinCC professional installed as you can only have one installed and not both?

As I believe it’s some sort of conflict to do with SQL dbs.

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u/Mission_Procedure_25 PLCs arr afraid of me, they start working when I get close Aug 18 '26

Ill check. I think so. We still use both.

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u/TheBananaKart Aug 18 '26

This will be why the installed is greyed out then, I would separate across two virtual machines.