CRM 2011 Rollup 6–Plan It First!

Over the last few months I’ve been working on a CRM 2011 implementation for a customer of mine.  The customer is a heavy user and they have come across a number of issues, mostly with the Outlook plugin.  Microsoft Support now insist Rollup 6 is installed before tackling any issues and this is now considered the base build for CRM 2011.

Interestingly, Rollup 6 was originally release on Friday 13th January, and subsequently pulled – later to be released again around a week later.

Anyway, we have now installed Rollup 6 on client and server, but the process took about a week to properly plan, test and implement.  The bottom line is: don’t just go ahead and install this rollup!

Here are a few notes I thought Id share with my experience:

Client + Server Must be Patched Together

We ideally wanted to stage the rollup i.e. do the server first, and then clients bit by bit.  We had done this with previous rollups without issue.  However in testing we found the following:

– Rollup 6 Client would not connect to a Rollup 4 server

– Rollup 4 Clients did connect to a Rollup 6 server, but we experienced 404 errors when saving records.

Therefore my advice is to upgrade client and server together

Server Reboot Required

You will be asked to reboot your CRM Server after the server/email router/SSRS extensions Rollup 6 install completes. So be prepared for this. There is no need to reboot after every patch – I waited until the server, email router and SSRS extensions had all be done.

Rollup 6 Cannot be Uninstalled

There is no rolling back from Rollup 6 if something goes wrong – it cannot be uninstalled like some previous rollups.  The path back to your previous installation would be to rebuild your CRM Server.  Therefore its imperative to take a backup of your content database prior to attempting Rollup 6.  Of course if your server is virtual, snapshots can be your friend here.

Check CRM and SSRS Services Afterwards

I found on some occasions that one or more CRM related services failed to start.  This may have nothing to do with the rollup per say and maybe due to the required server reboot, but do check none the less.

Outlook Crashes

One of the main reasons we looked at Rollup 6 was the claim to fix ‘random Outlook crashes’. Unfortunately Outlook is still crashing on users’ machines following the Rollup – I am still investigating that one and I’ll update this post as soon as I get a breakthrough.


In short, this is a BIG release and a milestone of sorts, although it doesn’t solve every problem! But give it some respect and test the patch on a non production system first and plan the upgrade of your clients to co-inside with the server patching.

CRM 2011 Email Router–Event Log Error 23379

On a CRM 2011 installation I cam across an issue where the Email Router had ceased to send email and the Event Log was seeing this error each time an email was attempted to be sent from CRM:


The first thing I checked was the build numbers of CRM Server and CRM Email Router (I just looked at the properties of sample DLLs in each respective bin directory). I found these to be different.  The CRM Server was Rollup 4, whereas the Email Router was RTM.

After installing Rollup4 for the Email Router, and rebooting, the router immediately kicked into life and began firing the backlog of email.

In addition to this there had been a change to the Deployment settings and Claims+IFD had been configured.  Although the Email router configuration had the correct URL set and was enabled, I have a hunch that a reboot was required following this change…