Assume that you have a Windows 8.1-based device that is connected to an authenticated proxy. In this situation, Windows Location Provider fails the geolocation lookup for IP addresses or Wi-Fi location sources. Therefore, no location information is available for the device unless it has GPS. For example, the Bing Maps app cannot place your location on a map, and the Bing Weather app cannot determine your city.
To resolve this issue, install update rollup 2919394. For more information about how to obtain this update rollup package, click the following article number to go to the article in the Microsoft Knowledge Base:
2919394 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update rollup: February 2014
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates