What is this script error in Zwift’s login launcher?

What is this script error in Zwift’s login launcher?

Recently an annoying script error has started to pop up in the Zwift launcher, at least in the Windows version. It looks like this:

As some have found out, the error is in a script coming from Pinterest. But how can that be, and can it cause Zwift to run poorly?

To answer the last question first: No, this does not cause Zwift to run poorly.

This is because the Zwift launcher (zwiftlauncher.exe) is a separate program from the Zwift game itself (zwiftapp.exe). The launcher handles user authentication and login, then starts the Zwift game, which runs in its own process.

But why is this error appearing?

The Zwift launcher does user authentication by showing regular web pages, coming from Zwift web servers, inside an embedded Internet Explorer control. If you investigate what those pages contain you will see that they include a whole load of different scripts and tracking stuff from many different sources, including Pinterest.

The same web pages for login are also used when you access Zwift web sites such as my.zwift.com. Apparently, Zwift forgot to test that their pages also work properly in their own launcher when they updated something recently!

What can you do about it?

It is possible to change your Internet Explorer settings to block the script from Pinterest entirely, but the easiest is simply to answer ‘Yes’ to continue to run scripts. It will probably be fixed by Zwift zoon.

Note: this post originally ran on ZwiftHacks.com

About The Author

Jesper Rosenlund Nielsen

Jesper lives in Vejle, Denmark and has been zwifting since 2015. He rides with World Social Riders whenever possible and also runs ZwiftHacks, the home of ZwiftMap, ZwiftPref, and other tools and hacks for Zwift riders. Find him on Strava

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C.L.F.
C.L.F.
9 days ago

Thanks for the post. Had this problem with a facebook script for at least half a year now. Honestly, I don’t know if it changed to pinterest lately or if there even are two errors now – I’m so used to just klick it away…
Would be nice to have it fixed, though!

Graham Davidson
Graham Davidson (@guzzibear)
9 days ago

This has been occurring for many months on my PC running windows 8. I thought it was just my old laptop, so relieved to find out it isn’t

Barry R
Barry R
9 days ago

The first thought that comes into my mind about this is how can I block all this 3rd party tracking that I didn’t agree to and don’t want?

Stephen de Souza
Stephen de Souza
9 days ago

I’ve had this too. But when I have had it recently, I can’t actually launch Zwift at all. So I have uninstalled and reinstalled twice. If it happens again I will make sure to click “yes” and see if that helps.

Andrei
Andrei
9 days ago

I saw the same error. I found that it ONLY appears when I start Zwift using a shortcut on my desktop. In contrast, if I start Zwift from Windows menu (or using Zwift icon pinned to the taskbar), this error does not appear. As an added beneift, Zwift does not show a screen for user name and password either (which autopopulates, but one still has to click into these fields with the mouse).

C.L.F.
C.L.F.
8 days ago
Reply to  Andrei

Hm, interesting. I can’t replicate that. Starting from taskbar yields the same error.

Colin Peerman
Colin Peerman
9 days ago

it’s a bit rubbish that Zwift are *even* using Internet Explorer to run scripts. No-one else is, Internet Explorer has been unsupported for quite a while now. That’s before we get into why Zwift are using a web browser as a ‘launcher’ app. I know Zwift looks like a game from the 1990s, but the coding shouldn’t be…. 🙄

Mike
Mike
9 days ago
Reply to  Colin Peerman

while the graphics are dated I must defend zwift and say this blows the water out of any game released from 1990-1999. Richmond pre make over looked rough….almost like an average GameCube game circa 2004. that being said, new graphics would be nice and in 2-3years time will be an absolute necessary upgrade…but I’d love to see new animations. i would love to be able to customize rider a bit to have different types of riding form for sprints and uphills, and even downhills, see riders cheer on the bike when you get a 30 day PR, see the rider… Read more »

Marco Penna
Marco Penna
9 days ago

have this popping up recently. just hit “yes” and program runs fine.

Cédric
Cédric
8 days ago

I got tired of waiting for Zwift to fix this bug (add this one to the long list of bugs which have stayed unaddressed for years now) so I simply added *.pinimg.com to the list of Restricted sites in Internet Options>Security>Restricted sites>Sites in IE11. Problem solved !

Andrei Istratov
Andrei Istratov
8 days ago
Reply to  Cédric

I suppose, one can do the same thing in firewall settings, either on the computer or even on home wi-fi router. Many of them have built-in firewalls, too.

Andrew
Andrew
8 days ago

I started getting that error on my Windows 10 PC a few weeks back after a Zwift update, and found uninstalling and reinstalling the Zwift app on my PC resolved it for me 👍

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