Brian Robbins

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Are you using process isolation containers? If so, this error is expected, because the kernel is shared amongst all of the containers on the machine, and allowing those events to...

Can you please share a set of repro steps that you used to get here? Thanks.

Thanks for clarifying. I don't have a Windows 8.1 environment, so this will require some setup. As an FYI though, Windows 8.1 goes out of support in 5 days: https://support.microsoft.com/en-us/windows/windows-8-1-support-will-end-on-january-10-2023-3cfd4cde-f611-496a-8057-923fba401e93....

This behavior is expected, as Windows 8.1 is no longer supported by Microsoft.

Can you please share more data about the error and what you're see?

I see - this is an issue with the `ParallelLinuxPerfScriptStackSource`: ``` Unable to process 'file:///C:/Users/daikiaminaka/Downloads/handshake_f1000a.perf.data.txt': System.AggregateException: One or more errors occurred. (Operations that change non-concurrent collections must have exclusive access....

This looks like it's a missing lock or other multi-threaded access protection mechanism. This will require a change in TraceEvent to fix.

This is an issue in TraceEvent which is the library that drives PerfView. This is the right repo for this issue.

This is likely fixed by #1817. Are you able to test against the latest source code?

@adamsitnik, sorry for the delay on this. It looks like something probably went wrong enabling the events in the runtime. Is it possible that `COMPlus_EnableEventLog=1` wasn't set for the application...