In case you are missing the CRM-AddIn buttons in your outlook and you are sure you installed the AddIn, then maybe the following steps will help you:
| 1. Open the outlook-options: |  |
|
2. Navigate to Add-Ins and open the COM-Add-Ins list: |
 |
| 3. If the following checkbox is unchecked, check it and click OK: |  |
| Et voila: Your buttons are back! |  |