Problem in making DFS Sub-Structure available with HTTP on IIS 10.0

Hi,

i want to make the "Projects" Part of our DFS Structure accessible by HTTP. (\\company.com\dfs\projects\...)

• I've installed IIS on Server 2019 (webserver.company.com)
• Set up an Application Pool "Projects" (No Managed Code / Classic / Identity is a Domain Technical User)
• Set up a WebSite "Projects" With Application Pool "Projects". Authentication: Anonymous Disabled; Windows Authentication Enabled (No Kernel Mode)
• Now i've added a Virtual Directory "Projects" which points to\\company.com\dfs\projects

In IIS Manager i can expand the DFS trees without any problems.

I can explore every folder

I can browse it locally by URL (https://localhost/Projects/location/test) (it takes some time until i get the page)

But when i try to accesshttps://webserver.company.com/projects/ from another computer, i always get a window for username / password . No matter what user i use, the window always reappears.

ISS Log Message:

2020-09-24 10:56:49 172.16.3.29 GET /projects/location/test/ - 443 Domain\user 172.22.77.16 Mozilla/5.0+(Windows+NT+6.3;+WOW64;+Trident/7.0;+rv:11.0)+like+Gecko - 401 3 5 11

Tried different things.. but with no success. 

Any ideas?

Thanks in advance!