Hi @ΠΑΠΠΑΣ Ι. ΑΛΕΞΑΝΔΡΟΣ,
Welcome to Microsoft Q&A!
You need to first stop the running collection session.
You can run the following command line to stop the active collection session.
VSDiagnostics.exe stop 1 /output:C:\temp\VSDiagnostics.diagsession
Then, running the command again:
VSDiagnostics.exe start 1 /attach:28240 /loadConfig:AgentConfigs\CPUUsageLow.json
Sincerely,
Anna
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