Hi there,

I have the necessary modules installed. But when I ran your script and try to use the message trace, I get this:

Get-MessageTrace : The term 'Get-MessageTrace' is not recognized as the name of a cmdlet, function, script file, or 
operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try 
again.

I've made sure to do a import-module * before running your script and I don't quite understand why it's not working.

I've installed the necessary modules using the below:

Install-Module PowerShellGet -Force
Install-Module –Name ExchangeOnlineManagement
Install-Module -Name MSOnline
Install-Module -Name AzureADPreview 

UPDATE:

I think I know what the issue is, but I don't know how to fix it.

If I run this:

Connect-ExchangeOnline -UserPrincipalName <UPN> -ShowProgress $true

I will then connect to EXO and then I can run Get-MessageTrace just fine.

But if I then immediately run your script, it will prompt twice for my login and during this process, it will remove my EXO session:

After that, Get-MessageTrace will not be recognized as a cmdlet. So I'm guessing your script is trying to connect to EXO and to MSO (hence why I get 2 login prompts) and somehow one session removes the other...?

UUPDATE 2:

Nevermind, nothing wrong with your script. The account I used for "change_me" did not have correct permissions in Azure and O365. I then tested a global admin account but I simply used "connect-exchangeonline" to connect to the global admin account, instead of changing the "change_me" to the global admin account.

It would be nice if your script prompted for the username and domain instead of hardcoding it into the script.

UPDATE 3:

I've modified your script a bit to make it easier to use without having to constantly modify the "change_me" parameter. Just chuck the code below to the start of your script:

$GlobalAdminAccount = $(Write-Host "Enter the global admin email address: " -ForegroundColor Magenta -NoNewline; Read-Host)

$ClientDomain = $GlobalAdminAccount.split("@")[1]

$ClientDomainChoice = $(Write-Host "Press Enter to use '$ClientDomain', otherwise type your own client domain: " -ForegroundColor Magenta -NoNewline; Read-Host)

if ([string]::IsNullOrWhiteSpace($ClientDomainChoice)){

}else{

	$ClientDomain = $ClientDomainChoice
}

Then replace change_me with $GlobalAdminAccount and $ClientDomain respectively. Everytime you run the script, it'll prompt you to enter a global admin account and it will by default take the domain of that account and use it as the domain. If you don't want to use that domain, just type the domain you'd like to use in the prompt.