Symantec Enterprise Vault Error – This version of the Enterprise Vault Outlook Add-In is not compatible with the installed version of Microsoft Outlook

While performing some maintenance on our XenApp 6.5 hosts running Outlook 2010 with the Enterprise Vault client, we started getting an add-in incompatibility error when launching Outlook.

EV error

After looking around on Symantec’s website I was not able to find any tech articles re: a solution.  I did run into a blog ( which pointed me in the right direction.


Create the following “String Value” regkey


EV issue regkey