Try lowering the setting from High to Medium-High, or even a bit lower, to allow the broadband test application to load.

If you are unable to see Speed Test, though other content appears on the speed test page, check your browser's security setting.

But at minimum use Firefox 53, Chrome 59, Safari 10, IE 11, or Edge 13 or higher.

In which browsers does the Speed Test work best?įor best results, use the most recent version of your favorite browser. We first complete a latency test to our servers, and if a server does not respond within a specified time frame, it is not included in the City list.Ī slow response can be caused by latency or packet-loss between the client and server, or particularly high Internet usage (during peak hours). Why is the location I usually pick missing from the City list? If you continue to get a socket error message, or another type of error message, please provide feedback by emailing us at Please, include your OS/Browser information. To prevent this error, and get the most accurate test results, close all other browser tabs and windows before running. “A socket error occurred during the Upload test.

The test may fail to complete and display the following message: An error may result from having the speed test open in more than one browser tab or window.