How to Upgrade the Distribution Group version from Exchange 2003 to Exchange 2010 for All Objects

In my Exchange environment, I have thousands and thousands of distribution groups, all of which needed to be upgraded to the latest Exchange version so that they could be easily managed in the Exchange Management Console by our help desk.

Not wanting them to have to manually upgrade each one as they came across them, I looked for a way to upgrade all of them all at once. It’s actually quite simple, just run the command below… it simply retrieves each Distribution Group and then runs the “Set” command against it. It doesn’t actually make any modifications to the object though, it just upgrades it to the latest version.

get-DistributionGroup | set-DistributionGroup
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