Get a list of users from all groups in Office 365 | Msol

GET A LIST OF ALL USERS FROM ALL GROUPS IN OFFICE 365

We can create many different types of groups in Office 365/Azure. The different types that get created are Distribution Lists, Mail-Enabled Security Groups, Unified Groups (New Office 365 Groups), Security Groups, Dynamic Security Groups etc. I have seen tenants that have hundreds of different types of groups. If we are to get a report of all the members within those groups, we would need to run multiple PowerShell commands, one for each group type.

Here is a snippet of the list of different types of groups and lists that can be created in the Exchange Admin Center. If you have a lot of these groups, you could either get a list of each group buy playing with the commands above or use the Azure Module to get a list of all MSOL Groups. Get-msolgroup or Get-AzureASMSGroup

I have written a script that is useful in getting all groups and members in O365. The script gets a list of all groups in Office 365, and then cycles through each group getting their members.

If you would just like a list of groups without their members you can download a .csv file from the portal.

Script Execution:

1. Run PowerShell as Admin and connect to MSOL service by running Connect-MsolService. For details on how to connect to MSOL reference the link: Connect to Office 365 PowerShell: https://docs.microsoft.com/en-us/office365/enterprise/powershell/connect-to-office-365-powershell
2. You will first be prompted for a location to save the output file
3. You will get the following results in the output: Group DisplayName, Group Email, Member DisplayName, and Member Email
4. This is what the .csv file would look like:

About the Script. (how does it work):

For this is have skipped the beautification e.g. Adding the choice button, headers, write and read host etc.

• The script begins by collecting the location for the .csv file (where would you like to save the data). Then I begin by collecting a list of groups and saving it in a variable “$objGroups”

$objGroups = Get-msolgroup -All | Sort-object objectid

• I then cycle though each group, get a list of members and save it in a variable

  “$objGMembers”. Since MSOL Groups are addressed by their ObjectID the groups ObjectID is called.
  Foreach ($objGroup in $objGroups)
  {
  write-host "Processing $($objGroup.DisplayName)..."
  $objGMembers = Get-MsolGroupMember -groupobjectid $($objGroup.objectid)
  write-host "Found $($objGMembers.Count) members..."
  $name = $_.objectid
  $displayname = $_.displayname
  $email = $_.proxyaddresses

• Once all the data is collected I go ahead and write the output to a file and write the output to PowerShell for visibility.

Foreach ($objMember in $objGMembers)
{
Out-File -FilePath $OutputFile -InputObject "$($objGroup.DisplayName),$($objGroup.proxyaddresses),$($objMember.DisplayName),$($objMember.EmailAddress)" -Encoding UTF8 -append
write-host "`t$($objGroup.DisplayName),$($objGroup.proxyaddresses),$($objMember.DisplayName),$($objMember.EmailAddress)"

Download the Script:

Technet: Get a list of all users from all groups in Office 365

Reference:

Manage Distribution Groups and Distribution Group Members
Manage mail-enabled security groups
Manage Office 365 Groups with PowerShell
Manage Dynamic Distribution Groups