Script stopped working about ews-office365-contact-sync HOT 11 CLOSED

Are you sure that the user is excluded? That portion of the script doesn't depend on application impersonation or EWS. I'd suggest you double-check the credentials. You can test by manually running the below code in a PowerShell window. It should return a list of all users.

$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri $ConnectionUri -Credential Get-Credential -Authentication Basic -AllowRedirection
Import-PSSession $Session -DisableNameChecking -AllowClobber
	
		# Import Global Address List into Powershell from Office 365 Exchange as an array
		$ContactList = Get-User -ResultSize unlimited

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@dmaglinte77 I don't see the error message?

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Yep, definitely looks like an authentication issue with the account you're using. Could be one or more of the below issues:

1. Invalid username/password
2. Basic authentication is disabled in your environment
3. The account lacks Exchange Online admin access

I'd suggest you follow Microsoft's troubleshooting guide here and verify that basic authentication is enabled for the account.

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Good morning!
I was able to make some progress. I had to go into the MFA settings inside Org Settings and allow Exchange Online Powershell to use Basic Auth. But now I'm getting different errorS:

PS>TerminatingError(Connect-EXCExchange): "Exception calling "AutodiscoverUrl" with "2" argument(s): "The Autodiscover service couldn't be located.""

TerminatingError(Connect-EXCExchange): "Exception calling "AutodiscoverUrl" with "2" argument(s): "The Autodiscover service couldn't be located.""
2020/11/06 10:57:08 ERROR Failed to Sync-ContactList for [email protected] Exception calling "AutodiscoverUrl" with "2" argument(s): "The Autodiscover service couldn't be located."

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Looks like you're using basic EWS authentication (Negotiate Auth), which your environment is probably also blocking. Can you try using the latest version of the script along with the -ModernAuth flag? Make sure to follow the new instructions found in the read me.

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No dice. I re-downloaded your code and ran it again. Made sure -ModernAuth was set, but still getting that same error message.

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@dmaglinte77 The newest version of the script now uses an AzureApp so it completely bypasses MFA-related issues. Please update and follow the guide in the README.md to resolve this issue.

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@dmaglinte77

I'd recommend updating soon.

Microsoft will depreciate basic authentication (used by the old script) on October 1st, 2022. Tenets will have the opportunity to manually delay the depreciation until December 31st, 2022 on a per-protocol basis. See below.

https://techcommunity.microsoft.com/t5/exchange-team-blog/basic-authentication-deprecation-in-exchange-online-september/ba-p/3609437

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