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Powershell: poll users from multiple OUs not in a specific group, and add users to group

Posted on 2016-11-01
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Last Modified: 2016-11-01
I'm trying to write a script that will search for any user across multiple OUs that does not belong to a specified group, and then add them to that group. Here's what I have so far.

$group = (Get-ADGroup 'group').DistinguishedName
#
#
$OUs = "OU=1,DC=domain,DC=local","OU=2,DC=domain,DC=local"
#
#
ForEach ($OU in $OUs) {Get-ADUser -Filter {-not (memberof -eq $group)} -SearchBase $OU}
#
#
ForEach-Object {Add-ADGroupMember -Identity $group -Members $_ }

With what I wrote, I receive an error "Add-ADGroupMember : Cannot validate argument on parameter 'Members'. The argument is null or empty. Provide an argument that is not null or empty, and then try the command again."

Adding a pipe to the third line creates an empty pipe element, so I'm not sure how to tie the third and fourth lines. Any suggestions?

Thanks.
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Question by:Justin Garner
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2 Comments
 
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Accepted Solution

by:
footech earned 2000 total points
ID: 41869050
It'll be more efficient to add all the members with one command, rather than adding each member individually.
$newmembers = ForEach ($OU in $OUs) { Get-ADUser -Filter {-not (memberof -eq $group)} -SearchBase $OU }
Add-ADGroupMember -Identity $group -Members $newmembers

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If you don't want your Get-ADUser command to search child OUs, you will need to also specify the -searchscope parameter.
1
 

Author Closing Comment

by:Justin Garner
ID: 41869067
Awesome! Worked like a charm. Thank you very much.

Edit: Actually, it worked as expected with the WhatIf parameter. Executing the command returned an error:

Add-ADGroupMember : The specified account name is already a member of the group
At line:15 char:1
+ Add-ADGroupMember -Identity $group -Members $newmembers
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (CN=group,OU=groups,DC=domainDC=local:ADGroup) [Add-ADGroupMember], ADException
    + FullyQualifiedErrorId : ActiveDirectoryServer:1378,Microsoft.ActiveDirectory.Management.Commands.AddADGroupMember

It seems like perhaps the user filter isn't working?
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