Hi @--AlexP--
Microsoft Edge supports SharePoint 2016 on-premise, however, some older SharePoint functionality will not work on browsers other than Internet Explorer.
You could try to create Internet Explorer (IE) mode in Microsoft Edge for organizations that still need Internet Explorer 11 for backward compatibility with existing websites but also need a modern browser. This feature makes it easier for organizations to use one browser, for legacy web/apps or for a modern web/app. You could refer to this article to learn more about what it is and how to configure it:
https://learn.microsoft.com/en-us/deployedge/edge-ie-mode
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.