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Question: Creating projects with WinCC OA 3.20.15 on Windows fails
21.08.2026 15:31
by
Gunnar Fabritius
I installed the WinCC OA 3.20.15 version on Windows and tried to create a new project.
This always failed with an error message stating that copying the certificates to the project directory failed. I did many attempts and even reinstalled 3.20.15 but nothing helped.
Only downgrading to an older version (I still had 3.20.9 on my machine) did help.
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