Calcheck – Microsoft’s Calendar Checking Tool

While working on a user issue with calendar items syncing properly, I came across this free Microsoft utility called CalCheck (how original!) that they released in 2012. They say that this utility works with Outlook 2003/2007/2010 and Exchange 2003/2007/2010.

Please note – this utility does NOT fix anything. Rather, it looks for calendar items that may be corrupted, creates a log file report, and optionally move those items to a separate Outlook folder for you to review.


  1. Download the CalCheck utility to your workstation, and unzip the file
  2. Locate and run CalCheck.exe with admin privileges (Run As…)
  3. When finished, locate and review the CalCheck.log file that was created.

It appears that most Calendar item issues flagged are associated with one of the scenarios described in Microsoft’s KB  2714118 (“Calendar items that are copied are missing in Exchange Server 2007”)


I’ll report back on my findings as it relates to the issue at hand.

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