Enabling automatic calendar repairs in exchange server 2010 sp1
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Enabling automatic Calendar Repairs in Exchange Server 2010 SP1 PowerPoint PPT Presentation


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Enabling automatic Calendar Repairs in Exchange Server 2010 SP1. “How-to” procedure. To enable CRA only on some users. 1- Disable repair for all users on a mailbox server get-mailbox -server <mailbox server> -resultsize Unlimited | Set-Mailbox -CalendarRepairDisabled $true

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Enabling automatic Calendar Repairs in Exchange Server 2010 SP1

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Enabling automatic calendar repairs in exchange server 2010 sp1

Enabling automatic Calendar Repairs in Exchange Server 2010 SP1

“How-to” procedure


To enable cra only on some users

To enable CRA only on some users

  • 1- Disable repair for all users on a mailbox server

  • get-mailbox -server <mailbox server> -resultsize Unlimited | Set-Mailbox -CalendarRepairDisabled $true

  • 2- Enable repair for individual mailboxes

  • Set-Mailbox -Identity <Mailbox UPN or alias> -CalendarRepairDisabled $false

  • 3- Schedule for the Mailbox Server : run for an hour every hour and let it run for 24 hours

  • Set-MailboxServer -Identity <ServerName> -CalendarRepairWorkCycle 1.00:00:00 -CalendarRepairWorkCycleCheckpoint 1.00:00:00

  • 4- Log location on Mailbox server

  • C:\Program Files\Microsoft\Exchange Server\V14\Logging\Calendar Repair Assistant

  • 5- View mailboxes with CalendarRepair enabled

  • get-mailbox -server <mailbox server> -Filter “CalendarRepairDisabled -eq `$false” -ResultSize unlimited


Troubleshooting cra

Troubleshooting CRA

  • Use Test-AssistantHealth to monitor the health of Mailbox Assistants, including the CRA

  • Note : common issue found

    • Adding quotes arount the path solved the issue.

      • HKLM\system\currentcontrolset\services\msexchangemailboxassistants\imagepath

      • it contains C:\Program Files\Microsoft\Exchange Server\V14\Bin\MSExchangeMailboxAssistants.exe.

        • Putting quotes around it solved cases


Conclusion what types of issues will this solve

Conclusion :What types of issues will this solve

  • This will solve the problem for those users who had the Calendar Repair Assistant enabled.

    • Occasionally, a user will see a meeting request in their calendar that was put there by the Calendar Repair Assistant as part of the repair. There is a large notice at the bottom of the calendar item that it was put there by the Calendar Repair Assistant.

  • However, users who do not have the Calendar Repair Assistant enabled would continue to experience problems.

  • Anyway, it is highly recommended that you identify the source of Calendar alterations if these happen frequently ! The CRA will repair inconsistencies but too frequent inconsistencies are not normal at all !

    • Causes can include but are not limited to:

      • Blackberry Server misconfiguration or bug

      • Too much delegates on a calendar that creates conflicts resulting in Outlook meeting disappearance (when a user update a meeting, Outlook deletes the original one and replaces it with the new/updated one)

      • Add-ons on Outlook that cause meeting disappearances

      • File level Anti-Virus scanning the Outlook’s OST files


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