Thanks Jukka – MOSS 2007 SP2 Upgrade Failure – Solution!

During an upgrade, the psconfig command fails with

Failed to upgrade SharePoint Products and Technologies.

An exception of type Microsoft.SharePoint.Upgrade.SPUpgradeException was thrown.

Quick live search and I find on Jukka’s blog the answer:

Specifically, a feature was not installed, and quickly installing using the stsadm command Jukku provides, it then works…