Enterprise vault add in is inactive in Outlook 2013

I have installed the new add in 10.0.3 for outlook 2013 on my Windows 8 computer. But the Enterprise vault add in stay inactive.

I tried the ResetEVClient solution : this not corect the issue.

Others users of my service have installed the add-in and have the same problem.

Have you see the same error recently.

thanks for your help.