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Connecting to remote server outlook.office365.com failed with the following error message : Access is denied.

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Monday, July 6, 2020 7:30 PM

Hello Team. 

Please same my sanity! 

Bellow is a simplified version of my code. It was working without any issues 2 weeks ago. 

When i run the code i get the error: Connecting to remote server outlook.office365.com failed with the following error message : Access is denied.

This is what i know. I have correct username password and no MFA issue. This account does not require MFA. If i replace Connect-ExchangeOnline with Connect-AzureAD or Connect-MSOL it works. which indicated that username\password are correct. 

This code works on the same computer in another project. If i copy PowerShell command to PowerShell it will run without any issue.  

Summary: This code does not work only for ExchangOnline in 1 project. I would appreciate any ideas on what may cause this. 
I have a workarounds in place, but i need to fix for this project.

protected void cgetLAPSP_click(object sender, EventArgs e)
{
    string psscript = @" 
        [string]$userName = '[email protected]'
        [string]$userPassword = 'Mypassword'

        [securestring]$secStringPassword = ConvertTo-SecureString $userPassword -AsPlainText -Force
        [pscredential]$credOject = New-Object System.Management.Automation.PSCredential ($userName, $secStringPassword)

        Connect-ExchangeOnline -Credential $credOject 
        Disconnect-ExchangeOnline -Confirm:$false  
    ";
    PowerShell ps = PowerShell.Create();
    ps.AddScript(psscript);
    Collection<PSObject> psresult = ps.Invoke();
}

All replies (1)

Tuesday, July 7, 2020 6:31 AM

Hi Allan,

Thank you for posting here.

Since this code worked well before, and now it can also be used in another project on the same computer, then I think this code itself may not be wrong.

See if the content in these two documents is helpful to you.

Connect to Exchange Online PowerShell using multi-factor authentication

"Access is denied" error when you connect to Exchange Online by using remote Windows PowerShell

Best Regards,

Timon

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