How to Find Inactive Computers in Active Directory ( export to .csv file )

To Specify inactivity range value below :

Command :

$DaysInactive
= 180  [Enter]
To $time variable converts $DaysInactive to LastLogonTimeStamp property format for the -Filter

Command :

$time = (Get-Date).Adddays(-($DaysInactive)) [Enter]

To Identify and collect inactive computer accounts:

Command :

Get-ADComputer -Filter {LastLogonTimeStamp -lt $time} -ResultPageSize 2000 -resultSetSize
$null -Properties Name, OperatingSystem, SamAccountName, DistinguishedName, LastLogonDate| Export-CSV “C:\Temp\StaleComps.CSV” –NoTypeInformation [Enter]

Example as below :

And the result, will get in csv file.