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

Hello,

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:

https://www.webpagetest.org/video/compare.php?tests=191007_3P_69524c2c786b6b4cfb03b96a4850edbb-r:1-c:0

and here:

https://www.webpagetest.org/video/compare.php?tests=191010_HW_179fa7a7e6f221db22a0085b0775a532-r:1-c:0

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!

Nicolas

Hello Nicolas,

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

Did someone find a solution?

Thank you,
Yann