Update manager 6.0 with vCenter 6.0 after migration wizard

While I was busy at at customer upgrading their VMware environment, I ran into a strange issue.
The upgrade involved migrating from windows vCenter 5.5 to a vcsa 6.0 Update 2. I used the migration wizard for this solution. (6.0 Update 2M).
The old vCenter was running also the update manager. Meaning I had to move the update manager to a new windows server and after the vCenter was migrated I had to upgrade the update manager.
This sounds simple.
And it was ….. for a while…
I successfully moved the 5.5 update manager installation to a new windows server.
The migration to the VCSA also went successfully (loving it)
but then…..
The iso for 6.0Update 2M doesn’t contain the update manager software. So I downloaded the iso for windows installation. From the same page as I downloaded the previous iso. But when I install update manager, I get the error that the vCenter server is incompatible with the update manager…. (what !!!!)
After some (soul) searching…. I found a forum thread that the Update Manager for vCenter 6.0.0b does work. (really…..)

And yes … after downloading that iso, starting the update manager installation, the upgrade was succesfull.

I only wonder… what is the difference between 6.0Update2M and the windows version. Why won’t the update manager from that iso work with the 6.0Update2M version….


If you want to migrate from a 5.5 enviroment to the latest version  on 6.0 (currently update 2a), then after using the migration tool, go to the vCenter Appliance administration site and start from there the update. (https://<fqdn&gt;:5480)
After which you can upgrade vCenter Update Manager to the latest version.