Home Sharing not working between iMac and Apple TV

I cannot get the home sharing to work between my iMac27" (running Sequoia 15.6.1) and my AppleTV (mod 2169; running tvOS 26.0.1). The Home Sharing is working fine with an older AppleTV device. Any suggestions out there?

[Re-Titled by Moderator]

Original Title: Home sharing problems