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…

Microsoft’s Windows 10 update options explained

By admin

Microsoft’s naming changes for Windows 10 updates can be a little confusing.  Here’s a little guide to describe the latest terminology and a mapping between the old and new terms. As you will likely already know, Microsoft has shifted from a new release of Windows every few years to a ‘windows as a service’ model. …

Adding Users to O365 Distribution List

By admin

A script I recently used to add members to an office 365 distribution group using a remote exchange session in a hybrid setup (covered at the end). 

CSV file contains UPNs of all users to be added. I also found it useful to see who had permissions to send to this group using