Import-CalendarCSV -CSVFileName F:\Documents\calendar.csv -EmailAddress -username -password thepassword
If you aren't using Impersonation, you need to add the username and password to the cmdlet: Import-CalendarCSV -CSVFileName F:\Imports\calendar.csv -EmailAddress -Impersonate $true Now you are ready to import the CSV into one mailbox using this command Create CSV file using, at minimum, these fields: Subject, Start Date, Start Time, End Date, End Time.