[Randor]

What Windows 7 telemetry are you referring to? Other than WER, there was no telemetry in Windows 7 to my knowledge. There was an update a few years ago that back ported telemetry to Windows 7 right before the final stage of extended support and final EOL.

[jeroenhd]

Back when Microsoft started pushing telemetry in Windows 10, they added additional telemetry to Windows 7 through updates. Not nearly as pervasive and omnipresent as with Windows 11, though; you can just remove the telemetry updates: https://gist.github.com/xvitaly/eafa75ed2cb79b3bd4e9

[Randor]

Yes, it was me that backported some of that telemetry to both Windows 8.1 and Windows 7, circa 2015 when I was working on the WU team but we used WER to upload that to our endpoints. I don't think there was any telemetry at all before 2015 in the base operating system.