By now you need to be conscious that Microsoft will convert off primary authentication in Workplace 365 later on this calendar year and that will strike Exchange On-line seriously. It’s not a big offer when it will come to mail consumers or the administrator console (EAC), but automation utilizing PowerShell scripts will be impacted and I not long ago ran into these an concern.
If you have an Trade hybrid environment and are making use of Public Folders, (some of) your Mailboxes are in Exchange Online, but your General public Folders are nevertheless on-premises. For this to operate correctly, your Community Folder Mailboxes should be synchronized applying Azure Advert Connect, and you will have to operate a PowerShell script (known as Sync-ModernMailPublicFolders.ps1) to synchronize the mail-enabled Public Folders with Trade On line.
This operates fine, till Primary Authentication is turned off and an mistake is shown:
Or in basic text:
Unable to make a remote shell session to Trade On the internet. The error is as follows: “Connecting to distant server outlook.workplace365.com unsuccessful with the subsequent mistake message: Access is denied
You will not see this mistake instantly, but at some place you will notice that modifications in Community Folders are not visible in Outlook anymore.
The not recommended resolution is to re-help essential authentication, but you can also down load the updated script from Microsoft that assistance modern day authentication as of May 2022. You can locate the up to date General public Folder migration scripts on the Microsoft site.
Observe: A different pitfall in this article is conditional access enforcing MFA, I ran into this as well at a shopper, resulting in the same error message.
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