Archived item suddenly not able to open in Oulook 2010

Hey guys,

since some days I am not able to open an archived item on my Windows 7 Client with Outlook 2010. In the backend we are using Exchange 2013.

Everytime I try to open an archived item it looks like the EV Addin is not installed. (see picture)

But the strange thing is that it is working on my 2 Terminal Servers. (see picture)

And on the OWA of 2013 it is working as well. (see picture)

So this is really strange it is only not working on the Windows 7 Clients.

In the Outlook Addin itself I am able to search in the Explorer and it is possible to open there the attachments.

Maybe some Microsoft Updates?

I have disabled all Outlook AddIns. Problem is still there.

I have disabled the Kaspersky on the Client. Problem is still there.

I checked the following links. But on my side is everything is configured like it should be.

https://vox.veritas.com/t5/Enterprise-Vault/Unable-to-open-archived-items-in-shared-mailboxes/td-p/591167
https://www.veritas.com/support/en_US/article.TECH47875

Then I checked the registry for the "OutlookVBScript" entry. I deleted the entries, but the problem is still there.

So at the moment I am pretty out of ideas.

Any suggestions how I can get it working on my Windows 7 Clients?