Re-enabling a disabled add-in

Here are the steps to enable a disabled plugin on Outlook 2013/2016:

  1. Click on File > Info > and select "Slow and Disabled add-ins":

     

  2. Enable Redmine for Outlook:
    Click on Enable this add-in.

    Button Enable will change to Disable, the add-in will be loaded.

    Here are the steps to enable a disabled plugin on Outlook 2010:

    Click on the "File" tab in your navigation and Click Add-in:

    Click on Enable this add-in.

    Button Enable will change to Disable, the add-in will be loaded.