When you use CRM for Outlook, occasionally something will happen, like a slow response from the server, and Outlook will ask the user if they want to disable the add-in. If the CRM add-in is disabled, CRM functionality will no longer be available from Outlook.
To prevent the add-in from being permanently disabled, you can use a registry script or group policy to enable the add-in if it is disabled.
The add-in enable behavior is controlled by the registry key hklm/software/microsoft/office/outlook/addins/crmaddin.addin/LoadBehavior
Setting it to 3 sets the addin to enabled