I”m working on a Office365 Migration for a client that has an Excahange 2010.  Encountered some some migration issues.  I ran the testexchangeconnectivity.com test for RPC over HTTP, and everything was just fine, excpet for the last test, which returned the dreaded:

“The RPC_S_SERVER_UNAVAILABLE error (0x6ba) was thrown by the RPC Runtime process.”

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