Exchange Online Powershell failed to connect when using MFA

Unfortionally the the Exchange Online Remote PowerShell Module is not supported in PowerShell Core (macOS, Linux, or Windows Nano Server) see here (https://docs.microsoft.com/en-us/powershell/exchange/exchange-online/connect-to-exchange-online-powershell/mfa-connect-to-exchange-online-powershell?view=exchange-ps). As a workaround, you can install the module on a computer that'

If you use MFA (multi factor authentication) you might very soon recognize that the normal power shell connection is not working (e.g. you might get an "access denied") error:

The full error message is:

New-PSSession : [outlook.office365.com] Connecting to remote server outlook.office365.com failed with the following error message :
[ClientAccessServer=VI1PR08CA0018,BackEndServer=,RequestId=1c6b263f-08cf-1234-1234-123456789091,TimeStamp=1/12/2018
2:46:41 PM] Access Denied For more information, see the about_Remote_Troubleshooting Help topic.
At line:1 char:12
+ $Session = New-PSSession -ConfigurationName Microsoft.Exchange -Conne ...
+            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : OpenError: (System.Manageme....RemoteRunspace:RemoteRunspace) [New-PSSession], PSRemotingTransportException
+ FullyQualifiedErrorId : -2144108477,PSSessionOpenFailed

To use PowerShell with MFA you need to perform the following steps:

1.) Login to the Exchange Online ECP (https://outlook.office365.com/ecp) and switch to the Hybrid section. There is a 2nd option, which offers "Exchange Online PowerShell Module supports multi-factor authentication" which needs to be installed

2.) Once installed you can use the following PowerShell commands to connect to Exchange Online via PowerShell using MFA:

$office365UserPrincipalName = "admin@emea.contoso.com"
$PSExoPowershellModuleRoot = (Get-ChildItem -Path $env:userprofile -Filter CreateExoPSSession.ps1 -Recurse -ErrorAction SilentlyContinue -Force | Select -Last 1).DirectoryName
$ExoPowershellModule = "Microsoft.Exchange.Management.ExoPowershellModule.dll";
$ModulePath = [System.IO.Path]::Combine($PSExoPowershellModuleRoot, $ExoPowershellModule);

Import-Module $ModulePath;

$Office365PSSession = New-ExoPSSession -UserPrincipalName $office365UserPrincipalName -ConnectionUri "https://outlook.office365.com/powershell-liveid/"

Import-PSSession $Office365PSSession

More info´s can be found here:

- Connect to Exchange Online PowerShell using multi-factor authentication

- Using PowerShell ISE to connect to Exchange Online when MFA is enabled

Kommentare (8)

Michael

1. vor 1 Jahr
2. #432

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Thanks, very useful

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Bastian W.    Michael

1. vor 1 Jahr
2. #532

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you are welcome

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Dave Walker

1. vor 1 Jahr
2. #476

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Works like a charm. Thank you very much.

1. Antworten

Bastian W.    Dave Walker

1. vor 1 Jahr
2. #531

This comment was minimized by the moderator on the site

You are welcome :-)

1. Antworten

wade

1. vor 1 Jahr
2. #529

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Great! Thank you very much.....Works great...

1. Antworten

Bastian W.    wade

1. vor 1 Jahr
2. #530

This comment was minimized by the moderator on the site

nice to hear it was helpful :-)

1. Antworten

Yash Soni

1. vor 2 Monaten
2. #765

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How to make it work on Linux?? (MFA exchange online connection using powershell).

1. Antworten

Bastian W.    Yash Soni

1. vor 2 Monaten
2. #768

This comment was minimized by the moderator on the site

Unfortionally the the Exchange Online Remote PowerShell Module is not supported in PowerShell Core (macOS, Linux, or Windows Nano Server) see here (https://docs.microsoft.com/en-us/powershell/exchange/exchange-online/connect-to-exchange-online-pow...

Unfortionally the the Exchange Online Remote PowerShell Module is not supported in PowerShell Core (macOS, Linux, or Windows Nano Server) see here (https://docs.microsoft.com/en-us/powershell/exchange/exchange-online/connect-to-exchange-online-powershell/mfa-connect-to-exchange-online-powershell?view=exchange-ps). As a workaround, you can install the module on a computer that's running a supported version of Windows (physical or virtual), and use remote desktop software to connect.

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