C# add active directory user to group

Question

I'm trying to create a user and add it to 3 groups, the creation is working properly but adding user to groups sometimes it's working and sometimes show this error:

there is no such object on the server

my code for adding user to group :

try
            {
                DirectoryEntry dirEntry = new DirectoryEntry("LDAP://" + group, ADUsername, ADPassword);
                if (dirEntry != null)
                {
                    dirEntry.Properties["member"].Add(userPrincipal.DistinguishedName);
                    dirEntry.CommitChanges();
                    dirEntry.Close();
                }
            }
            catch (System.DirectoryServices.DirectoryServicesCOMException E)
            {
                //doSomething with E.Message.ToString();

            }

Read this : c# - Adding and removing users from Active Directory groups in .NET - Stack Overflow[^] — DevBassem
– DevBassem, Commented Sep 18, 2018 at 9:18

Jono · Accepted Answer · 2019-02-18 10:51:24Z

2

I have experienced this and in my situation it was because the newly created object hadn’t replicated to all of our DCs. I resolved this by introducing a 3 second delay after I created the user. I then proceeded with adding the user to the groups.

answered Feb 18, 2019 at 10:51

Jono

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1 Comment

Rainer Schaack Over a year ago

Yes, this has been my first thought too after reading this question. Some developers don't like sleeps (sometimes for good reason), but real life requires this in some situations :-) Perhaps only 1 sec delay and using a retry loop.

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