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RobertCrane's avatar
Jul 08, 2020

Error when connecting to Exchange online vis PowerShell

Trying to connect to various Exchange Online tenants using the new PowerShell V2 modules and receive this error on some:   Import-PSSession : Data returned by the remote Get-FormatData command is...
  • Fred_Weinmann's avatar
    Jul 09, 2020

    Hi folks,

     

    a quick update from engineering:

    This is a known issue with only some of the service endpoints, which is why some of you are affected, some not, and why it can go away after some time.

    Engineering is working on a fix for this and will patch this as soon as possible (Since we are still narrowing it down, I can't give you a solid ETA yet, sorry), at which point everything should be back to normal. Once the problem has been resolved, I will most definitely post an update here.

     

    In the meantime, there is a workaround to get you unblocked:

    You can update the connection Uri to explicitly include the "SerializationLevel=Full" parameter.

     

    For example:

     

    Connect-ExchangeOnline

     

    would become:

     

    Connect-ExchangeOnline -ConnectionUri "https://outlook.office365.com/powershell-liveid?SerializationLevel=Full"

     

    While this will keep working indefinitely, it increases the bandwidth use, potentially slowing execution at scale. I would recommend to not use this as a permanent update to your code and undo it once the issue has been resolved.

    Note: We have received reports of this workaround not working for everybody. We are investigating this, whether it is the same problem or an entirely new one.

     

    I'll try to keep you updated on this once I have any news on the issue 🙂

     

    If you are affected by this and want to help us troubleshoot this, please fill out this quick survey. It helps us with developing a pattern and tracking down affected sessions.

     

    Update: Fixed typo in workaround

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