Wednesday, October 14, 2009

ERROR: "The command is not available" error message when you launch Outlook.

Problem:

When you try to use the "Out of Office reply" option is Microsoft Outlook you receive the following error:

"The command is not available. See the program documentation about how to use this extension."

Resolution:

There are two ways to go about fixing this problem.

Method 1:

From Outlook, select Help > About Microsoft Outlook > Disabled Items. Select "outex.dll" and click Enable. If this does not fix your issue then try method 2.

Method 2:

  • Ensure Outlook is closed (and outlook.exe process is not running)
  • Launch Regedit
  • Remove HKCU\Software\Microsoft\Office\11.0\Outlook\Resiliency key
  • Close Regedit
  • Launch Outlook

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