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Users keep getting meeting acceptance notifications for already accepted meetings and / or appointments.

eb
3 months ago

Hello,

We are having an issue with Migration Manager for Exchange where migrated users keep receiving meeting acceptance notifications for already accepted meetings. 

Any help is greatly appreciated.

Thanks!

Parents
  • 0 3 months ago in reply to JohnnyQuest

    Thanks JohnnyQuest - Unfortunately, our maintenance contract expired recently and I can't get to that KB. 

  • 0 3 months ago in reply to eb

    Mmmm... so you have no support for the product either.  Not a great place to be when working on a high profile project?

    Here's the meat of KB for you.

    Cause:

    This happens due to Microsoft Calendar Repairing Assistant sending these notification because it considers these meetings / appointments conflicting.

    Relevant resolution:  (may require some tweaks as this is old information)

    For all Office 365 mailboxes:
    Use PowerShell to create a remote session to Office 365 to execute the following commands:
    $cred= Get-Credential
    $o365= New-PsSession -ConfigurationName Microsoft.Exchange -ConnectionUri ps.outlook.com/powershell -Credential $cred -AllowRedirection -Authentication Basic
    Import-PsSession $o365 –Prefix o365
    Get-o365Mailbox -ResultSize unlimited | Set-o365Mailbox -CalendarRepairDisabled $true
    The Calendar Assistant is now disabled for all mailboxes in the Office 365 tenant. It can be enabled again after migration has been completed  by using this PowerShell command:
    Get-o365Mailbox -ResultSize unlimited | Set-o365Mailbox -CalendarRepairDisabled $false
Reply
  • 0 3 months ago in reply to eb

    Mmmm... so you have no support for the product either.  Not a great place to be when working on a high profile project?

    Here's the meat of KB for you.

    Cause:

    This happens due to Microsoft Calendar Repairing Assistant sending these notification because it considers these meetings / appointments conflicting.

    Relevant resolution:  (may require some tweaks as this is old information)

    For all Office 365 mailboxes:
    Use PowerShell to create a remote session to Office 365 to execute the following commands:
    $cred= Get-Credential
    $o365= New-PsSession -ConfigurationName Microsoft.Exchange -ConnectionUri ps.outlook.com/powershell -Credential $cred -AllowRedirection -Authentication Basic
    Import-PsSession $o365 –Prefix o365
    Get-o365Mailbox -ResultSize unlimited | Set-o365Mailbox -CalendarRepairDisabled $true
    The Calendar Assistant is now disabled for all mailboxes in the Office 365 tenant. It can be enabled again after migration has been completed  by using this PowerShell command:
    Get-o365Mailbox -ResultSize unlimited | Set-o365Mailbox -CalendarRepairDisabled $false
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