Problem to open Office documents from Sharepoint

Question

Hello All,
We have published SharePoint 2013 (NTLM authentication) via TMG 2010. However, we are having the following issue:
When users try to open (https connection) any Office Documents to Office 2013 they get prompted for credentials, then after they provide credentials they get "Sorry, we couldn't open <URL of the document>". The prompt for credentials is ok because
persistent cookies are not option for us. We don’t have Office Web Apps in use and we want to open documents to client application. Our company users machines are Windows 7, Office 2013 and Internet Explorer 10/11.
I made some tests and everything work fine with:
Windows 7, Office 2010 and Internet Explorer 10/11
Windows 7, Office 2013 and Internet Explorer 8
Almost fine:
Windows 7, Office 2013 and Firefox (latest). With Firefox it works if I open any Office document from summary link list but not if I try to open from inside document library. If I open from document library (right click) to new tab or to new window it works
fine.
Any ideas what’s going on? It must be something with IE 10/11 and Office 2013. I also tried with TMG persistent cookie and then I can open Office documents with IE 10/11.
I also checked with fiddler what happens and I can see that everything stops to 401 error.
Thank you,
Miikka Lehtonen
Turku University of Applied Sciences Limited

Answer 1

Hello Miikkal,
You need to enable SharePoint class in IE. Please follow this
blog and follow this
article.
Once, this is done you can Enable all the IE settings to load for Intranet and Trusted zone settings
Put your site in compatibility mode and trusted zone
Also, make sure that 2 versions of Office suite is not installed on the system.  Eg. Lync 2013 and Office 2010 on one single machine
What happen when you by pass your TMG server. To do this we need to make host entry for URL directed to APP server IP Address.
Thank You, Pallav S. Srivastav ----- If this helped you resolve your issue, please mark it Answered.