BI4.1 SP3, IE11 and PDF generation

Hi,

First i wish you all a happy new year!

Here is my first BI4 issue for 2015.

I've installed a BI4.1 SP3 platform on a windows 2008 R2 server.

Clients are running with IE11 in compatibility mode together with acrobat reader 11.

When i try and view a webi document in PDF format i get the error "Cannot view the document in pdf format" and i'm invited to open the document directly in acrobat.

Does someone know the reason for this behaviour?

Thanks

Xavier