Consider the following scenario:
You have a computer that is running Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2.
You try to open an attachment in Microsoft Outlook, and you use folder redirection to save the attachment to a specific folder.
The network connection has a high level of latency.
In this scenario, it takes a long time to open the file. For example, it may take more than 30 seconds to open a small text file.
To resolve this issue, install update rollup 2984006. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2984006 September 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2
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