Win8 Configuration error: server requires authentification (?)

Hi there,

I have always used Nextcloud successfully as a web.dav sync client on Windows 10 and Mac OSX. But after an issue within my web.dav, I had to re-install Nextcloud on Windows 10. Now I simply CAN’T configure it. After typing in the server adress, it tells me "server requirers authentication"

But hey, authentication is part of the normal game, isn’t it. On Mac, it worked out perfectly. What am I doing wrong? Previously, I just had to type in my credentials after locating the https:// server adress. Can you help?

PS: I have tried the address with Https://***/ as well as ***/dav.php and ***/dav.php/home