Hi @MarceTek
Do you want to launch the website in IE mode? Will it open in IE mode successfully if you open the site in non-kiosk mode? Will it show the error in non-kiosk mode?
From this doc, the issue might be caused by lacking required Windows Updates. You can install all the latest Windows Updates and refer to the Prerequisites to install the required Windows Updates.
Besides, you can check if you have enabled IE11 successfully in Windows Features. If you have enabled, you can also try to reinstall IE11 in Windows Features.
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Regards,
Yu Zhou