Just FYI all as no one had actually posted commands yet to get this done, i thought i would asssit. I used some of the links and adapted the power shell so that it works for me in the most direct way.
First examine the problem, my groups that were showing the GAL had HiddenFromAddressListsEnabled set to both true and false, but ALWAYS had HiddenFromExchangeClientsEnabled set to false. So that is the property i need to modify in order to correct the issue.
First we need to connect to office365 powershell. I have opened a powershell command prompt locally and run the following commands:
$UserCredential = Get-Credential
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection
Import-PSSession $Session -DisableNameChecking
Second we run the command to see how many groups are affected:
Get-UnifiedGroup -ResultSize Unlimited | select Name, DisplayName, HiddenFromExchangeClientsEnabled, HiddenFromAddressListsEnabled | where {$_.HiddenFromExchangeClientsEnabled -eq $False}
Third We dump those groups to a CSV file. Make sure the c:\temp\teams\ path exists or script will fail.
Get-UnifiedGroup -ResultSize Unlimited | select Name, DisplayName, HiddenFromExchangeClientsEnabled, HiddenFromAddressListsEnabled | where {$_.HiddenFromExchangeClientsEnabled -eq $False} | Export-csv -Path c:\temp\teams\HiddenGroups1.csv -NoTypeInformation -Encoding Ascii
Fourth, we fix them. I loaded this code into its own .ps1 file and ran it from the command line, but i think you could paste in the code directly.
$GroupList = Import-CSV "c:\temp\teams\HiddenGroups1.csv"
ForEach ($G in $GroupList) {
If ($G.HiddenFromExchangeClientsEnabled -eq "FALSE") {
Write-Host "Hiding" $G.DisplayName "from Exchange Clients"
Set-UnifiedGroup -Identity $G.Name -HiddenFromExchangeClientsEnabled:$True }
}
Worked for all but two test groups, not sure why those ones it did not work for, but i just deleted them as they were from old tests.
hope it helps someone.
