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

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

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

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

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

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 amp 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

[powershell] Adding and removing extensionattribute to AD object

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