O365 – reverting hard matching migration using ImmutableID

By Tom Kitching

This is a very obscure problem, so I’m recording this more for my own reference in future rather than expecting anyone else to have the same issue! The issue occurs when a migration from a hybrid exchange domain to another domain which uses AD Sync has been completed in the following manner: filter/delete user in…

Add AD security group to local administrators on Hyper-V server running core

By admin

First connect to the remote server with powershell

Next run the command to add the group:

If you’re paranoid (like me) and want to check this worked you can use: