Cannot use Speedtest.com on Mac running Big Sur 11.0.1

For some reason I cannot run a speed test using https://www.speedtest.net/. i always used to be able to.


I can run speed tests using every other service like Google Speed Test. I can use the SpeedTest App on my iPhone no problem, so not my network that's the issue. Only on my Mac. I have also tried tinkering with privacy and content setting with no luck.


Does anyone have an answer to this?


Posted on Jan 12, 2021 5:01 AM

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Posted on Jan 12, 2021 5:17 AM

If you are using an older Speedtest.net application on your Mac, it may be Flash dependent and that is now gone. Try speedof.me which is HTML5 based in your browser of choice.

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Jan 12, 2021 7:07 AM in response to jndub

I was able to run a speed test this morning in Safari 14.0.2 on Big Sur 11.1 without any issues — with and without any VPN connection. There must be something at your location, or with your ISP that is causing this issue, and it may be temporary.


Shutdown your Mac. Power off your router, and your ISP modem. Wait five minutes, then power up the ISP modem, and when it is fully operational, then power on your router, and when it is operational, then power up your Mac. Before attempting the speed test again, clear out your browser's cookies and cache.

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Cannot use Speedtest.com on Mac running Big Sur 11.0.1

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