NextJS GET request for the _error page denied when using basic auth in Internet Explorer

[jfarris587]

All browsers (including Microsoft Edge) work, except for Internet Explorer when navigating an _error page. If a user tries to navigate to a route that is not supported localhost:3000/banana then nextJS will call _error to render the page. However, in IE, this fails. Console will error the following:

The problem

This only happens when using basic auth. So looking into the Network logs I find that the GET request to _error is denied and a 401 response is sent.

However, this only happens for the error page, not for any other page in nextJS. Looking at what happens when loading any other page, this is the result - one GET request that is a 401, and then another immediately after that is successful.

Like the request for _error page, the first request contained no Authorization in the header, but the successful request did have it.

[timneutkens]

Looks strange! Could you create a minimal repository that we can investigate on?