active-directoryactive-directory-group

Server is unwilling to process the request - Active Directory - Add User via C#

I used the example in this page to add a user to an Active Directory group, but I get an exception with the message "Server is unwilling to process the request" when executing

dirEntry.Properties["member"].Add(userDn);

Solution

  • This question took me a lot of time to solve. First of all, the error message looks like a joke. Second, there is nothing more, just that message.

    Anyway, I managed to fix it by:

    1. Making sure that userDn contains the whole path (e.g., "LDAP://server-address/CN=" + userDn + ",OU=optional,DC=your-domain,DC=com". This is actually very important, if you don't supply the full path it will throw an Exception from HRESULT: 0x80005000.

    2. Replacing dirEntry.Properties["member"].Add(userDn); by entry.Invoke("Add", new object[] { userDn });

    Then I wanted to remove a user and I expected entry.Invoke("Remove", new object[] { userDn }); to work. However, this devilish AD will only work if you use lower case "remove", so entry.Invoke("remove", new object[] { userDn }); worked for me.