Hello,

I've updated Office 2013 on our Citrix servers and today users get the error "Office15.micrisift.com connecting to proxy server" authentication box pop up when opening Excel and Word docs.

We do use a proxy server (Websense) and I have had to remove the proxy settings from IE to temporarily fix this.

Can we stop Office trying to get to the internet via a GPO or turn a feature off?

A new update must of done this.

Hi TB,

Based on your description, you wonder to disable the verification of Proxy server in Office 2013.

Method 1:

Disable "Allow Office to connect to the internet" option

File>Options>Trust Centre>Privacy Options> "Allow Office to connect to the Internet"

Method 2:

Add the following sites as the exceptions of proxy server in IE

officeimg.vo.msecnd.net

office.microsoft.com

odc.officeapps.live.com

Method 3:

Change the DWORD value to set the user's preference, please follow these steps:

1. Click Start, click Run, type regedit in the Open box, and then click OK.
2. Locate and then click the following subkey:

HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Common\Internet\

Note: If you cannot find the

Internet

subkey, you must create it. To create the

Internet

subkey, click New on the Edit menu, click Key, and then type Internet.

1. Locate and then click the following value:

UseOnlineContent

Note: If you cannot find the UseOnlineContent value, you must create it. To create the UseOnlineContent value, click New on the Edit menu, click DWORD Value, and then type UseOnlineContent.

1. Double-click the

UseOnlineContent

value.

1. In the Value data box, type the appropriate value. The following list contains the possible values:
   • 0 - Never show Office Online content or entry points
   • 1 - Use only offline content whenever available, for example, .chm Help files
   • 2 - Use Office Online content whenever available
2. Click OK, and then quit Registry Editor.

To get more information, please read this article:

http://blogs.prodata.ie/post/Annoying-Proxy-Prompts-in-office-2013-on-start-up.aspx

Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information

Hope its helpful.

Regards,