We can’t make work our vaadin application on IE11 or Edge. We are using vaadin version 10.0.11.
View image with webcomponent-lite.js error.
We use maven for dependencies, through some dependency we’ve this webcomponentsjs versions:
![ErrorsIE11&Edge]
(https://vaadin.com/attachment/6a151c70-4015-4965-960d-70fed1b168b7/ErrorsIE11&Edge01.PNG)
Hi Adexe. I’m running the Bookstore starter with 10.0.11 from vaadin.com/start and it works for me with both Edge and IE11 (latter using production mode, of course). As I run the mvn dependency:tree I see that the org.webjars.bowergithub.webcomponents:webcomponentsjs:jar:1.2.6:compile is used.
So there is something different in your project that is causing it. If you can reduce it to a simple case that still reproduces the issue, please create a ticket to https://github.com/vaadin/flow/issues repository so we can investigate.
I am experiencing the same problem even with latest Vaadin 10 (10.0.17). Mid-term plan is migration to Vaadin 14 obviously, but customers want to use my app with Edge now. I’ve started with bakery full stack starter about a year ago and also the unchanged starter does NOT work with MS Edge! I guess the latest bakery full stack starter based on Vaadin 10 would probably work, but it’s not available for download anymore 
Are the latest starters for Vaadin 10 still somewhere available for download (some archive)? Did not find anything.
Haha, just upgraded to latest Vaadin 14.0.5 with my app and still the same issue
I guess it’s a Polymer2 related problem - maybe not using Vaadin 10-13 compatibility mode but migrating to Polymer3 instead will hopefully resolve this issue.
