In my case, the server had 2 NICs that were once enabled and one of the NICs was subsequently disabled. AppleTalk was originally bound to the disabled NIC. I resolved this problem by binding AppleTalk to the enabled NIC.
for information about this event.
If you, do not use a Macintosh in your network, you can get rid of this message in the following way:
1. Go to Control Panel -> Add/remove programs -> Windows Components -> other network and print services, and remove both AppleTalk services (file sharing and print), then reboot.
2. Go to Control Panel -> Network and dialup -> <your connection> -> properties and from the components window remove the AppleTalk services.
I found that the user had unchecked the Appletalk protocol.