How to add a hyperlink to an Outlook Signature Image.
STATUS:
Issue fixed in version 10.2. Microsoft Outlook Settings now includes the ability to add a hyperlink to a signature without the need to edit any HTML code. The latest version of Desktop Authority can be downloaded HERE
1. Under the desired User Profile go to Microsoft Outlook Settings | Signature | Edit signature, then click the Insert Image button. 
2. Link or upload your image.
3. Click the "Show Source" button.
4. Now add this HTML code before the picture is mentioned.
="http://WebSiteHere.com">
Example:
5. Click Confirm.
6. The hyperlink is now attached.
7. You will notice a border around the image. It can be removed by adding this HTML code to the end the picture’s code, with a space, and within the image’s brackets.
border="0"
Example:
NOTE: A request for the ability to add a hyperlink in Outlook settings without editing HTML code has been submitted and tracked under DAMS-443. This is under review by our Product Management team for inclusion in a future release.