Adding and removing extensionattribute to AD object

Question

I'm using powershell to modify some AD extensionattribute.

This is my code to add an extensionattribute

Set-ADUser -Identity "anyUser" -Add @{extensionAttribute4="myString"}

It works, but how can I remove the same extensionattribute? I can't find anything similar to -remove.

Answer 1

You could try using the -Clear parameter

Example:-Clear Attribute1LDAPDisplayName, Attribute2LDAPDisplayName

http://technet.microsoft.com/en-us/library/ee617215.aspx

Answer 2

I used the following today - It works!

Add a value to an extensionAttribute

 $ThisUser = Get-ADUser -Identity $User -Properties extensionAttribute1
    Set-ADUser –Identity $ThisUser -add @{"extensionattribute1"="MyString"}

Remove a value from an extensionAttribute

  $ThisUser = Get-ADUser -Identity $User -Properties extensionAttribute1
  Set-ADUser –Identity $ThisUser -Clear "extensionattribute1"