Error validating credentials due to invalid username or password

Question

Script that was run on Exchange Server.

What script does? Looks for user mailbox- look at user attribute, and if value of attribute is forced, extension attributes - (Calendar repair disable) It searches for all mailbox and see attribute repair disabled.

If value is forced, we set to true. We use two credential to run Powershell script. use on-prem accounts to start the schedule task, once the task is started on-prem, it connects to exchange online, This then uses. We see it trying to authentication, we see success logon, and failure logon, When it authenticate with ExO credentials, it gets password from a file, that gets encrypted password Need help to determine why one script works, and the other doesn't.

Answer 1

@SY_MSO

Do you mean that you cannot connect to Exchange online from your script? If so, you could add those commands below into your script:

$User = "******@domain.onmicrosoft.com"  
$PassWord = ConvertTo-SecureString -String "Password" -AsPlainText -Force  
$UserCredential = New-Object -TypeName "System.Management.Automation.PSCredential" -ArgumentList $User, $PassWord  
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection  
Import-PSSession $Session -DisableNameChecking    

It will connect to Exchange online automatically with the User and Password that contained in this script.

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