Summary
Microsoft has released a security advisory about this issue for IT professionals. The security advisory contains additional security-related information. To learn more about the vulnerability, see https://technet.microsoft.com/security/advisory/3108638.
More Information
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.
How to get and install the update
Method 1: Windows Update
This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see
Get security updates automatically.
Method 2: Microsoft Download Center
You can get the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.
Click the download link in the following table that corresponds to the version of Windows that you are running. Determine whether your computer is running the 32 or 64-bit version of Windows.
| Windows Server 2008 |
|---|
| Windows Server 2008 for x64-based Systems Service Pack 2 (3108604) |
| Windows Server 2008 R2 |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (3108604) |
| Windows 8 and Windows 8.1 |
| Windows 8 for x64-based Systems (Professional and Enterprise editions only) (3108604) |
| Windows 8.1 for x64-based Systems (Professional and Enterprise editions only) (3108604) |
| Windows Server 2012 and Windows Server 2012 R2 |
| Windows Server 2012 (3108604) |
| Windows Server 2012 R2 (3108604) |
| Windows 10 |
| Windows 10 for x64-based Systems (Excluding Home editions) (3108604) |
| Windows 10 Version 1511 for x64-based Systems (Excluding Home editions) (3108604) |
| Server Core installation option |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) (3108604) |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) (3108604) |
| Windows Server 2012 (Server Core installation) (3108604) |
| Windows Server 2012 R2 (Server Core installation) (3108604) |
More Information
How to get help and support for this security update
Help for installing updates: Support for Microsoft Update
Security solutions for IT professionals: TechNet Security Troubleshooting and Support
Help for protecting your Windows-based computer from viruses and malware: Virus Solution and Security Center
Local support according to your country: International Support
File Information
File hash information
| File name | SHA1 hash | SHA256 hash |
|---|---|---|
| Windows8.1-KB3108604-x64.msu | 19579A333517781081A2FA5FFB3D925E910CA5D5 | 03E5532F032AF612DCD6A8FE4F8C9AEAA3BF06947E2D58E485D16E7CDE87CDDC |
| Windows8-RT-KB3108604-x64.msu | 5F6071ACD425BDAF029A07BD68734B2C78116635 | 6E566B10DC3ED6A90933932870D0146051377E6FB99913207B095A66757F9015 |
| Windows6.1-KB3108604-x64.msu | 6E07CEBFD63DA274B01579ECE15D64E27D9240E3 | AD6D68AF699BCFC5FA8D5C0D0836F3F4E5DF11BE55284D997340307074C3A148 |
File information
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 and Windows Server 2012 R2 file information
Notes
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 MUM files (.mum) that are installed are not listed.
For all supported x64-based versions
| File name | File version | File size | Date | Time | Platform |
|---|---|---|---|---|---|
| Hvax64.exe | 6.3.9600.18119 | 1,367,384 | 05-Nov-2015 | 13:10 | x64 |
| Hvix64.exe | 6.3.9600.18119 | 1,398,104 | 05-Nov-2015 | 13:10 | x64 |
| Hvloader.efi | 6.3.9600.18064 | 1,391,448 | 29-Sep-2015 | 23:41 | Not applicable |
| Hvloader.exe | 6.3.9600.18064 | 1,264,472 | 29-Sep-2015 | 23:41 | x64 |
| Hvservice.sys | 6.3.9600.17826 | 68,952 | 12-May-2015 | 00:24 | x64 |
| Kdhvcom.dll | 6.3.9600.17826 | 19,800 | 12-May-2015 | 00:24 | x64 |
Windows Server 2012 file information
Notes
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 6.2.920 0.17xxx Windows 8, Windows RT, or Windows Server 2012 RTM GDR 6.2.920 0.21xxx Windows 8, Windows RT, or Windows Server 2012 RTM LDR 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 MUM files (.mum) that are installed are not listed.
For all supported x64-based versions
| File name | File version | File size | Date | Time | Platform |
|---|---|---|---|---|---|
| Hvax64.exe | 6.2.9200.17565 | 1,118,552 | 05-Nov-2015 | 15:21 | x64 |
| Hvix64.exe | 6.2.9200.17565 | 1,131,352 | 05-Nov-2015 | 15:21 | x64 |
| Hvloader.efi | 6.2.9200.17565 | 1,084,248 | 05-Nov-2015 | 15:21 | Not applicable |
| Hvloader.exe | 6.2.9200.17565 | 998,232 | 05-Nov-2015 | 15:21 | x64 |
| Hvservice.sys | 6.2.9200.16433 | 67,816 | 11-Oct-2012 | 08:42 | x64 |
| Kdhvcom.dll | 6.2.9200.16433 | 19,688 | 11-Oct-2012 | 08:42 | x64 |
| Hvax64.exe | 6.2.9200.21683 | 1,122,648 | 05-Nov-2015 | 14:03 | x64 |
| Hvix64.exe | 6.2.9200.21683 | 1,131,344 | 05-Nov-2015 | 14:03 | x64 |
| Hvloader.efi | 6.2.9200.21683 | 1,084,240 | 05-Nov-2015 | 14:03 | Not applicable |
| Hvloader.exe | 6.2.9200.21683 | 998,232 | 05-Nov-2015 | 14:03 | x64 |
| Hvservice.sys | 6.2.9200.20534 | 67,816 | 11-Oct-2012 | 07:29 | x64 |
| Kdhvcom.dll | 6.2.9200.20534 | 19,688 | 11-Oct-2012 | 07:29 | x64 |
Windows 7 and Windows Server 2008 R2 file information
Notes
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 6.1.760 1.18xxx Windows 7 or Windows Server 2008 R2 SP1 GDR 6.1.760 1.23 xxx Windows 7 or Windows Server 2008 R2 SP1 LDR 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 MUM files (.mum) that are installed are not listed.
For all supported x64-based versions
| File name | File version | File size | Date | Time | Platform |
|---|---|---|---|---|---|
| Hvax64.exe | 6.1.7601.19055 | 597,504 | 05-Nov-2015 | 09:25 | x64 |
| Hvboot.sys | 6.1.7601.19055 | 118,208 | 05-Nov-2015 | 19:10 | x64 |
| Hvix64.exe | 6.1.7601.19055 | 636,416 | 05-Nov-2015 | 09:25 | x64 |
| Hvax64.exe | 6.1.7601.23260 | 598,528 | 05-Nov-2015 | 09:27 | x64 |
| Hvboot.sys | 6.1.7601.23260 | 118,208 | 05-Nov-2015 | 23:31 | x64 |
| Hvix64.exe | 6.1.7601.23260 | 636,928 | 05-Nov-2015 | 09:27 | x64 |
| Vmwp.exe | 6.1.7601.23260 | 3,681,280 | 05-Nov-2015 | 09:44 | x64 |