Sometimes after a crash or critical error Outlook will disable third-party addins that it thinks might have played a part in causing the error. To reenable them, follow these steps:

  1. On the Outlook main menu, go to Help|About Microsoft Office Outlook:
    Microsoft Outlook main menu, Help | About Microsoft Office Outlook
  2. Then, on the About screen, click the Disabled Items button:
    Disabled Items dialog
  3. Select Lucatec® Mask from the list.
  4. Click the Enable button.
  5. Restart Outlook.
  6. If you can still remember what kind of error led to the addin getting disabled, ideally including the text of any error messages that appeared, please contact us at Diese E-Mail-Adresse ist vor Spambots geschützt! Zur Anzeige muss JavaScript eingeschaltet sein! and tell us about it.