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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. 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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  1. Enabling automatic Calendar Repairs in Exchange Server 2010 SP1 “How-to” procedure

  2. 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

  3. 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

  4. 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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