Server 2025 - unable to Open shared files and webpages on another 2025 Server

I have three or 4 2025 virtual servers on our domain penciled in to replace some older servers.  All the servers have file and storage roles and one is an IIS server as well.

If i try and open a shared file from any 2025 server the windows users name and password pop up opens and you cannot get past it.  If trying to open a IIS site from a 2025 server you cannot either.

From any other older server or client the share and the webpages are accessible and work as expected.

I obviously need this to work as these servers are part of an ERP Environment and need to have access to each other.

I've Searched the web and tried some of the suggestions but nothing so far has worked.  DNS has passed, pings have passed, Using IP brings the same issues.

Help