Open UNC Path on DFS

We have a Problem with PDFs on our DFS.

In the PDF, we are linking to other PDFs on the DFS. Acrobat Reader Resolves the Path right because the Security-Warning shows the path behind the DFS.

When opening the PDF from the UNC path the links work

After disabling the option "Enable Protected Mode At Startup" the link works from the DFS too

Adding the Servers/Domain Name to the Trusted Sites doesnt work.

Output of the protected mode log(German): 

[06:05/17:18:09] real path: \??\UNC\"domain"\"Path"\"File".pdf
[06:05/17:18:09] Ändern Sie gegebenenfalls die Richtlinie anhand dieser Richtlinienregeln: FILES_ALLOW_ANY oder FILES_ALLOW_DIR_ANY

Client: Windows 10 21H1

Acrobat Version: 2022.001.20117

DFS: Windows Server 2019

Thanks in advance for any help