For those of you using Exchange 12/2007 CTP via MSDN or TechNet who aren't on the official beta, I thought I'd share this gotcha/bug with you.

I'm working on various Exchange 2007 content at the moment so i've installed it a lot lately.

One of the installation requirements for Ex2007 is that you have MMC 3.0 installed.

However, if you have the most recent version installed, Ex2007 setup will tell you that you need to install MMC 3.0. This resulted in a lot of head scratching from me because, by default, the installation doesn't show up in Add/Remove programs. I thought that i'd just forgotten to install MMC.

The answer for the moment is to install the RC1 refresh version of MMC 3.0.

If anyone knows of a workaround that will let you keep the most recent version, let me know via the comments.

UPDATE:

After some searching (pointed out by Neil Hobson) I found the answer here.