Nino_BilicThanks for your reply.
I wasn't able to find any issues with procmon. The app writes all the performance monitor and event log files to the Jetstress directory but fails to create the report, so I don't think it's a permission error. I reinstalled the system with the English ISO file and now Jetstress works as expected. There is another issue on the German system when trying to use the automatic tuning. It fails because the performance counter "Prozessorzeit" couldn't be found. Must be something missing or wrong with the performance counters of the German install. I used the latest August 2024 ISO files, only difference was the language version.
13.09.2024 18:12:35 -- Automatic tuning is starting ...
13.09.2024 18:12:36 -- JetInterop batch transaction stats: 7021, 7021, 7021, 7020, 7020, 7020, 7020, 7020, 7020, 7020, 7020, 7020, 7020, 7020, 7020, 7020, 7020, 7020, 7020 and 7020.
13.09.2024 18:12:36 -- Dispatching transactions ends.
13.09.2024 18:12:36 -- Shutting down databases ...
13.09.2024 18:12:38 -- Instance6556.1 (complete), Instance6556.2 (complete), Instance6556.3 (complete), Instance6556.4 (complete), Instance6556.5 (complete), Instance6556.6 (complete), Instance6556.7 (complete), Instance6556.8 (complete), Instance6556.9 (complete), Instance6556.10 (complete), Instance6556.11 (complete), Instance6556.12 (complete), Instance6556.13 (complete), Instance6556.14 (complete), Instance6556.15 (complete), Instance6556.16 (complete), Instance6556.17 (complete), Instance6556.18 (complete), Instance6556.19 (complete) and Instance6556.20 (complete)
13.09.2024 18:12:38 -- Jetstress testing failed. Error: Der Leistungsindikator mit dem angegebenen Kategorienamen Prozessor konnte nicht gefunden werden; Indikatorname % Prozessorzeit.
Edit: Jetstress also works without problems on a German Server 2019 System.