Very Simple Powershell Ping test or IP scanner script

By Tom Kitching

This simple Powershell script will carry out a quick check against each IP in a 24 bit subnet and return a value of true or false dependent on whether or not it receives a reply.  It’s similar to using an IP scanner or a ping script. $subnet = "10.20.6." 1..254 | Foreach-Object {write-host "$Subnet$_…" (Test-Connection…

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…