Q:

Document not opening

I have a document library in Sharepoint 2010.  When a click on a document, the following happens:

The popup to open as read-only or edit comes up 
I choose readonly.  Word opens but the document does not open 
There is just the word application empty (without a document loaded)

I think the issue could be security related.  It happens on particular users only.  For other users the log-in screen comes up again and they can open the document. 
Any assistance would be greatly appreciated. 
Thanks,
Joseph

A:

Fixed - I just added the Sharepoint site to the trusted sites

