update-distributiongroupmember doesn't work with powershell script

Question

Hi,
i'm doing a script to get security group user to update distribution group member,
when i execute the command with manual value, it works and update tehe
but when i execute from script it doesn't work.

this is the command: update-distributiongroupmember -identity "$DL" -Confirm:$false -BypassSecurityGroupManagerCheck -Members $listaemail

here the error, where the couldn't find object is the value of my $listaemail

Write-ErrorMessage : Ex94914C|Microsoft.Exchange.Configuration.Tasks.ManagementObjectNotFoundException|Couldn't find object   
"albert*******,samuele*********,marco*********,giacom********,matteo****". Please make sure that it was spelled correctly or specify a different object.  
At C:\Users\admi*******\AppData\Local\Temp\8\tmpEXO_4gcss23m.kg0\tmpEXO_4gcss23m.kg0.psm1:1092 char:13  
+             Write-ErrorMessage $ErrorObject  
+             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
    + CategoryInfo          : NotSpecified: (:) [Update-DistributionGroupMember], ManagementObjectNotFoundException  
    + FullyQualifiedErrorId : [Server=DU0PR08MB7738,RequestId=1439f618-8f46-0d80-887c-bcbbbaae1b76,TimeStamp=Fri, 16 Dec 2022 16:18:54 GMT],Write-ErrorMessage  
   

i hide email address, but it will compare with "name.surname@keyman .ext,name.surname@keyman .ext" ecc..

someone can explain this issue?

thanks

Answer 1

You seem to be passing a string value for the Members parameter, make sure to pass an array instead. I.e. this will not work:

Update-DistributionGroupMember -Identity DG -Confirm:$false -BypassSecurityGroupManagerCheck -Members "user1,user2"  

but this will:

Update-DistributionGroupMember -Identity DG -Confirm:$false -BypassSecurityGroupManagerCheck -Members @("user1","user2")  

Answer 2

Hi @Marco Mandricardo ，

Based on your description, are you attempting to bulk update group members for multiple distribution groups? If this is the case, based on my test, you can consider preparing a csv file let's say list.csv which contains the groups and members, like below:
(one column is the name of the distribution groups, the other column is the member list which is seperated by ",".)

Then run the following command to make the change:

Import-Csv -Path C:\list.csv  | %{  
    Update-DistributionGroupMember -Identity $_.group -Members ($_.member -split ",") -Confirm:$false  
}  

If the above cannot meet your requirement, as said earlier, you can try sharing more details for further discussion.

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