Filmstrip displaying Windows popup update on Dulles IE11, breaking Speed Index


When using WebPageTest Scripting on the Dulles IE11 location, the filmstrip is displaying ~5s+ of a seemingly Windows-related update popup (the blue one in the filmstrip below). This popup interferes with the Speed Index calculation, returning false results.

You can see two instances of this happening here:

and here:

Image version:

It looks like the Windows runner for this particular runner has an update pending that it cannot download.

Let me know if I can be of any help!


Hello Nicolas,

I also have this problem and it is breaking all my statistics.

Did someone find a solution?

Thank you,