Mimecast for Outlook: The Mimecast Tab is Unavailable

Document created by user.oxriBaJeN4 Employee on Sep 4, 2015Last modified by user.oxriBaJeN4 Employee on Oct 25, 2016
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The Mimecast tab is unavailable in Microsoft Outlook, even though the Mimecast Windows Service is started.

For standalone installations, Mimecast for Outlook uses a user process called msddsk.exe. For multi-tenant environments (e.g.Terminal Services / Citrix) this process is switched to a per machine process running as the Local System account (msdsrv.exe).

Explanation

 

In certain circumstances, Microsoft Outlook may disable Mimecast for Outlook as a third party add in.

 

Resolution

 

Outlook 2013

  1. Click the File tab.
  2. Click on the Options menu item.
  3. Click on the Add-Ins menu item. The View and Manager Microsoft Outlook Add-Ins dialog is displayed.
  4. Select COM Add-ins in the "Manage" drop down list at the bottom of the dialog.
  5. Click the Go... button. The COM Add Ins dialog is displayed.
  6. Ensure the Mimecast for Outlook add-in is enabled. Clicking the tick box to the left of it if required.
  7. Click on the OK button to close the window and return to Microsoft Outlook.

 

Outlook 2010

  1. Click the File tab.
  2. Click on the Options menu item.
  3. Click on the Add-Ins menu item. The View and Manager Microsoft Outlook Add-Ins dialog is displayed.
  4. Select COM Add-ins in the "Manage" drop down list at the bottom of the dialog.
  5. Click the Go... button. The COM Add Ins dialog is displayed.
  6. Ensure the Mimecast for Outlook add-in is enabled. Clicking the tick box to the left of it if required.
  7. Ensure the Mimecast for Outlook add-in is listed under the "Active Application Add-ins" section, and not the "Disabled Application Add-ins" section.
  8. Click on the OK button to close the window.
  9. Click on the OK button to return to Microsoft Outlook.

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