This article describes an issue that occurs on a Windows Server 2012 R2-based computer that has the Remote Desktop Services (RDS) role installed. You can fix this issue by using the update in this article. Before you install this update, see the Prerequisites section.
Mapped network drives to a DFS share don't work for subsequent users. This issue occurs when the following conditions are true:
User Account Control (UAC) is enabled.
The EnableLinkedConnections registry value is set to 1.
For example, user A connects to the RDS server and starts his RD session. At logon, all drives are mapped successfully and user A can see the network drives in Windows Explorer are connected. When user B connects to the RDS Server and logs on, the drives that were already mapped by user A are shown as disconnected in Windows Explorer. The disconnected network drives, which were connected by user A, are also shown as disconnected to all the subsequent users that log on after user A.
How to get this update
You can get this update by using one of the following methods. We have released an update through Windows Update and Microsoft Update Catalog. Even though this issue is observed only in Windows Server 2012 R2, the update also applies to Windows 8.1 and Windows RT 8.1.
Important If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.
To apply this update, you don't have to make any changes to the registry.
You may have to restart the computer after you apply this update.
Update replacement information
This update doesn't replace a previously released update.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology that Microsoft uses to describe software updates.
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.
Windows 8.1, Windows RT 8.1 and Windows Server 2012 R2
The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
6.3.960 0.18 xxx
Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2
GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.
The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Standard, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows 8.1 Enterprise, Windows 8.1 Pro, Windows 8.1, Windows RT 8.1