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

User · Answer

I have struggled a long time to modify the extension attributes in our domain. Then I wrote a powershell script and created an editor with a GUI to set and remove extAttributes from an account.

If you like, you can take a look at it at http://toolbocks.de/viewtopic.php?f=3&t=4

I'm sorry, that the description in the text is in German. The GUI itself is in English.

I use this script on a regular basis in our domain and it never deleted anything or did any other harm. I provide no guarantee, that this script works as expected in your domain. But as I provide the source, you can (and should) have a look at it, before you run it.

User · Answer

To clear the value you can always reset it to  Null   For example   Set-Mailbox -Identity  username  -CustomAttribute1  Null

User · Answer

Or the -Remove parameter  Set-ADUser -Identity anyUser -Remove   extensionAttribute4  myString

User · Answer

You could try using the -Clear parameter   Example -Clear Attribute1LDAPDisplayName  Attribute2LDAPDisplayName  http   technet microsoft com en-us library ee617215 aspx

User · Answer

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

User · Answer

Extension attributes are added by Exchange  According to this Technet article something like this should work   Set-Mailbox -Identity  anyUser  -ExtensionCustomAttribute4   Remove  myString

User · Answer

Set-ADUser -Identity anyUser -Replace   extensionAttribute4  myString     This is also usefull

[powershell] Adding and removing extensionattribute to AD object

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