Outlook CRM button not appearing/CRM failed to Connect

CRM 2011 – Outlook CRM button not appearing/CRM failed to Connect

I had installed the outlook Add-In and it had been running for a month or so and then suddenly it stopped appearing in Outlook.

The folders weren't there and none of the functionality was showing.

After some investigation I found out the Add-In had been disabled! I have no idea when, how or who did this.

For CRM add-ins

Outlook -> Options -> Add-Ins

This will then show you the list of Add-Ins and if they are active, inactive or disabled

 Follow the bellows steps to enable it.

    Select COM Add-ins and click on Go button.

    Just select Microsoft Dynamics CRM and click on OK.