Consider the following scenario:
You have a computer that is running Windows RT 8.1 or Windows 8.1.
The computer has a mobile broadband device connected.
You create one or more geofences from apps on the system.
You move the system to a location that has no Wi-Fi hot spots.
In this scenario, the geofence monitor uses a location that is based on the IP address of the mobile broadband connection. Therefore, the location is sometimes incorrect. In this situation, geofence enter events or exit events may not work as expected. Additionally, because of the incorrect location, the system slows down its geofence tracking because it mistakenly perceives your location as far away from other geofences. Therefore, geofence events will be missed in the future.
To resolve this issue, install update 2955164. For more information about how to obtain this update, click the following article number to view the article in the Microsoft Knowledge Base:
2955164 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update rollup: May 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