Tag Archives: IPv6

Outlook Anywhere: RPC_S_SERVER_UNAVAILABLE error (0×6ba) was thrown by the RPC Runtime

When I set up Outlook Anywhere on Exchange 2007 and Windows 2008 I used the official MS tool (which I have to admit is actually pretty good)  www.testexchangeconnectivity.com . I kept getting this error:
Attempting to ping RPC Endpoint 6004 (NSPI Proxy Server)
RPC_S_SERVER_UNAVAILABLE error (0×6ba) was thrown by the RPC Runtime
After 2 days of endless head-scratching [...]