Method 1: Windows Update
This update is available from
Windows Update.
Method 2: Microsoft Download Center
The following files are available for download from the Microsoft Download Center:
Note The update for Windows RT 8.1 can be obtained only from Windows Update.
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base: 119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file. Prerequisites
To apply this hotfix, you must have
April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows 8.1 or Windows Server 2012 R2.
Registry information
To use the hotfix in this package, you do not have to make any changes to the registry.
Restart requirement
You may have to restart the computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace a previously released hotfix.
File information
The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows 8.1 and Windows Server 2012 R2 file information and notes
Important Windows 8.1 hotfixes and Windows Server 2012 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 8.1/Windows Server 2012 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
- 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:
| Version | Product | Milestone | Service branch |
|---|
| 6.3.960 0.17 xxx | Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 | RTM | GDR |
- 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 separately 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.
For all supported x86-based versions of Windows 8.1
| File name | File version | File size | Date | Time | Platform |
|---|
| Lsm.dll | 6.3.9600.17690 | 667,648 | 20-Feb-2015 | 23:24 | x86 |
| Workerdd.dll | 6.3.9600.17415 | 12,800 | 29-Oct-2014 | 02:03 | x86 |
For all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2
| File name | File version | File size | Date | Time | Platform |
|---|
| Lsm.dll | 6.3.9600.17690 | 780,800 | 20-Feb-2015 | 23:49 | x64 |
| Workerdd.dll | 6.3.9600.17415 | 14,336 | 29-Oct-2014 | 02:48 | x64 |
For all supported ARM-based versions of Windows 8.1
| File name | File version | File size | Date | Time | Platform |
|---|
| Lsm.dll | 6.3.9600.17690 | 530,944 | 20-Feb-2015 | 23:22 | Not Applicable |
| Workerdd.dll | 6.3.9600.16384 | 12,800 | 22-Aug-2013 | 03:14 | Not Applicable |
Additional file information
Additional file information for Windows 8.1 and for Windows Server 2012 R2
Additional files for all supported x86-based versions of Windows 8.1
| File name | X86_50e74005a9a14b385e3bfc3349008129_31bf3856ad364e35_6.3.9600.17690_none_dfe0f661bc7a9b8c.manifest |
| File version | Not Applicable |
| File size | 724 |
| Date (UTC) | 21-Feb-2015 |
| Time (UTC) | 08:51 |
| Platform | Not Applicable |
|
| File name | X86_microsoft-windows-t..localsessionmanager_31bf3856ad364e35_6.3.9600.17690_none_39d5af1e26300c76.manifest |
| File version | Not Applicable |
| File size | 42,063 |
| Date (UTC) | 21-Feb-2015 |
| Time (UTC) | 08:53 |
| Platform | Not Applicable |
|
Additional files for all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2
| File name | Amd64_238fff99f8804a5ec434a2e909ad3a7e_31bf3856ad364e35_6.3.9600.17690_none_59393575f4929ee9.manifest |
| File version | Not Applicable |
| File size | 728 |
| Date (UTC) | 21-Feb-2015 |
| Time (UTC) | 08:51 |
| Platform | Not Applicable |
|
| File name | Amd64_microsoft-windows-t..localsessionmanager_31bf3856ad364e35_6.3.9600.17690_none_95f44aa1de8d7dac.manifest |
| File version | Not Applicable |
| File size | 42,069 |
| Date (UTC) | 21-Feb-2015 |
| Time (UTC) | 08:55 |
| Platform | Not Applicable |
|
Additional files for all supported ARM-based versions of Windows 8.1
| File name | Arm_1a09426cb31e781771775049c9ca0ad6_31bf3856ad364e35_6.3.9600.17690_none_54b363227a87a01b.manifest |
| File version | Not Applicable |
| File size | 724 |
| Date (UTC) | 21-Feb-2015 |
| Time (UTC) | 08:51 |
| Platform | Not Applicable |
|
| File name | Arm_microsoft-windows-t..localsessionmanager_31bf3856ad364e35_6.3.9600.17690_none_39d82176262d2b3c.manifest |
| File version | Not Applicable |
| File size | 42,063 |
| Date (UTC) | 21-Feb-2015 |
| Time (UTC) | 08:51 |
| Platform | Not Applicable |
|
