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TsooRad is a blog for John Weber. John is a Skype for Business MVP (2015-2016) - before that, a Lync Server MVP (2010-2014). My day job is titled "Technical Lead, MS UC" - I work with an awesome group of people at CDW, LLC. I’ve been at this gig in one fashion or another since 1988 - starting with desktops (remember Z-248’s?) and now I am in Portland, Oregon. I focus on collaboration and infrastructure. This means Exchange of all flavors, Skype, LCS/OCS/Lync, Windows, business process, and learning new stuff. I have a variety of interests - some of which may rear their ugly head in this forum. I have a variety of certifications dating back to Novell CNE and working up through the Microsoft MCP stack to MCITP multiple times. FWIW, I am on my third career - ex-USMC, retired US Army. I have a fancy MBA. One of these days, I intend to start teaching. The opinions expressed on this blog are mine and mine alone.

2014/09/17

Lync Mirror RPC Server is unavailable

Don’t ask me why, I just know what I did to work around it.

Situation

I was engaged in establishing a database mirror for a new monitoring database for an established Lync 2013 CU4 EE pool.  When it came time to publish the topology and install the new databases, the mirror refused to instantiate with an error of:

An error occurred: "System.Runtime.InteropServices.COMException" "The RPC server is unavailable. (Exception from HRESULT: 0x800706BA

Lovely, eh wot?

The Fix

The SQL server version for all three servers in question is SQL 2012 SP1. I went through the usual routine of checking the services, the firewall rules, the rights and permissions on the SQL primary, mirror, and FSW.  All of that looked as it should.  Here is a good outline for you to follow should you need it.

What fixed it for me?  We turned off the firewall for all interfaces on all three SQL servers.  I know, but don’t ask me.  After the successful mirror activity, we turned the firewalls back on for all interfaces on all three SQL servers and everything seems to be happy.

Go figure.

YMMV

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