What is this Performance Profile .json file in MS teams PerfLogs folder?

Question

A user had this JSON file pop up randomly or by mistake which is located in C:\Users\xxxxx\AppData\Local\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams\PerfLogs. Not sure if this is a known log that is generated on MS Teams of no concern or should I be concerned?

Answer 1

Hello Edgar_466,

Thank you for reaching out to the Microsoft Community. My name is Eunice and I am happy to assist you today.

I found information in this article https://answers.microsoft.com/thread/947a55a6-e138-4c2b-ad3b-18cc9664d9eb, Sakiko shared information regarding this same inquiry.

"This is the folder used to store the logs, which are created and maintained by the system and usually do not need to be manipulated by the user."

Reference: https://learn.microsoft.com/microsoft-edge/devtools-guide-chromium/experimental-features/share-traces

Let me know if you need more help.

Kind regards Eunice

Answer 2

I fumbled my keyboard earlier today, and briefly got a notification popup saying something about Performance Tracking (I thought; it was gone too fast to read, let alone screenshot)...
It was a bit of a worry, but I just shrugged and got on with my day's work.

Then after a break I came back to my PC and found a Windows Explorer window had been spawned, pointing to a log file which contained 63 MB of plaintext, and which was enough to basically send any editor to "(Not Responding)" for some minutes!

I still don't know how I turned it on, or how I could have turned it off.

P.S. the link in the previous post no longer works.

Answer 3

And this was buried in the scroll of my Notifications
(now that New Outlook and New Teams send things into there; NOT an improvement on the previous provision)

"Performance Tracing" not tracking.

Armed with the search term "NRC Tracing", I found Reddit has the answer that answers.microsoft.com doesn't: it was Ctrl+Shift+T that does it.
So don't do Ctrl+Shift+T!
Unless you've done it inadvertently and have nothing to lose and might want to see whether doing it a second time might toggle it off...?