Get a list of active computers which have logged on to the domain in the last 7 days
# Trying to work out is servers, laptops or desktops have been decommissioned
# Try this script
# Get a list of active computers which have logged on to the domain in the last 7 days
$Date = (Get-Date).AddDays(-7)
Get-ADComputer -Filter {LastLogonDate -gt $Date} | Select distinguishedName
# https://social.technet.microsoft.com/Forums/windows/en-US/4d412730-5937-48c2-bf17-0dc9db013241/list-active-computers-in-ad?forum=winserverDS
# Credit to Richard Mueller – MVP Enterprise Mobility (Directory Services)