Summary
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow information disclosure if an attacker forces an encrypted Secure Socket Layer (SSL) 2.0 session and uses a man-in-the-middle (MiTM) attack to decrypt parts of the encrypted traffic. To learn more about the vulnerability, see Microsoft Security Bulletin MS15-089.
More Information
Important
-
All future security and nonsecurity updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require update 2919355 to be installed. We recommend that you install update 2919355 on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer so that you receive future updates.
-
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 obtain and install the update
Method 1: Windows Update
This update is available through Windows Update. When you turn on automatic updating, this update is downloaded and installed automatically. For more information about how to turn on automatic updating, see Get security updates automatically.
Note For Windows RT and Windows RT 8.1, this update is available through Windows Update only.
You can obtain 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 Microsoft Security Bulletin MS15-089 that corresponds to the version of Windows that you are running.
More Information
Windows Vista (all editions)Reference table
The following table contains the security update information for this software.
|
Security update file names |
For all supported 32-bit editions of Windows Vista: |
|
For all supported x64-based editions of Windows Vista: |
|
|
Installation switches |
|
|
Restart requirement |
In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart. |
|
Removal information |
WUSA.exe does not support uninstall of updates. To uninstall an update that is installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates, and then select from the list of updates. |
|
File information |
See the file information section. |
|
Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows Server 2008 (all editions)Reference table
The following table contains the security update information for this software.
|
Security update file names |
For all supported 32-bit editions of Windows Server 2008: |
|
For all supported x64-based editions of Windows Server 2008: |
|
|
Installation switches |
|
|
Restart requirement |
In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart. |
|
Removal information |
WUSA.exe does not support uninstall of updates. To uninstall an update that is installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates, and then select from the list of updates. |
|
File information |
See the file information section. |
|
Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows 7 (all editions)Reference table
The following table contains the security update information for this software.
|
Security update file name |
For all supported 32-bit editions of Windows 7: |
|
For all supported x64-based editions of Windows 7: |
|
|
Installation switches |
|
|
Restart requirement |
In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart. |
|
Removal information |
To uninstall an update that is installed by WUSA, use the /Uninstall setup switch. Or, click Control Panel, and then click System and Security. Under Windows Update, click View installed updates, and then select from the list of updates. |
|
File information |
See the file information section. |
|
Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows Server 2008 R2 (all editions)Reference table
The following table contains the security update information for this software.
|
Security update file name |
For all supported x64-based editions of Windows Server 2008 R2: |
|
Installation switches |
|
|
Restart requirement |
In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart. |
|
Removal information |
To uninstall an update that is installed by WUSA, use the /Uninstall setup switch. Or, click Control Panel, and then click System and Security. Under Windows Update, click View installed updates, and then select from the list of updates. |
|
File information |
See the file information section. |
|
Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows 8 and Windows 8.1 (all editions)Reference table
The following table contains the security update information for this software.
|
Security update file name |
For all supported 32-bit editions of Windows 8: |
|
For all supported x64-based editions of Windows 8: |
|
|
For all supported 32-bit editions of Windows 8.1: |
|
|
For all supported x64-based editions of Windows 8.1: |
|
|
Installation switches |
|
|
Restart requirement |
In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart. |
|
Removal information |
To uninstall an update that is installed by WUSA, use the /Uninstall setup switch. Or, click Control Panel, click System and Security, and then click Windows Update. Under See also, click Installed updates, and then select from the list of updates. |
|
File information |
See the file information section. |
|
Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows Server 2012 and Windows Server 2012 R2 (all editions)Reference table
The following table contains the security update information for this software.
|
Security update file name |
For all supported editions of Windows Server 2012: |
|
For all supported editions of Windows Server 2012 R2: |
|
|
Installation switches |
|
|
Restart requirement |
In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart. |
|
Removal information |
To uninstall an update that is installed by WUSA, use the /Uninstall setup switch. Or, click Control Panel, click System and Security, and then click Windows Update. Under See also, click Installed updates, and then select from the list of updates. |
|
File information |
See the file information section. |
|
Registry key verification |
Note A registry key does not exist to validate the presence of this update. |
Windows RT and Windows RT 8.1 (all editions)Reference table
The following table contains the security update information for this software.
|
Deployment |
These updates are available through Windows Update only. |
|
Restart requirement |
In some cases, this update does not require a restart. If the required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart. |
|
Removal information |
Click Control Panel, click System and Security, and then click Windows Update. Under See also, click Installed updates, and then select from the list of updates. |
|
File information |
See the file information section. |
|
File name |
SHA1 hash |
SHA256 hash |
|---|---|---|
|
Windows6.1-KB3076949-x86.msu |
534060F9BDDB4DBA2C47CD36B9F277369ECD8BEB |
9D21818913DBFD1E56C6CBAAEC19F6F67458EE0DE9EE61220E29FC446A66AC78 |
|
Windows8.1-KB3076949-arm.msu |
BD921E99258E1001ECC3CD023E7651CE43B8EAE8 |
9357135F6BAEA8A15D53A0A065E42B0E1DE462C917446793A544219190FD4E91 |
|
Windows8-RT-KB3076949-arm.msu |
D944FAA57AB33A8DA53219CD2DBA411D714A24FA |
F04864D34A5161F35E81E5208600C3420EE26EA574C3BCBE9106E21D36F0BFD1 |
|
Windows6.1-KB3076949-x86.msu |
534060F9BDDB4DBA2C47CD36B9F277369ECD8BEB |
9D21818913DBFD1E56C6CBAAEC19F6F67458EE0DE9EE61220E29FC446A66AC78 |
|
Windows6.1-KB3076949-x64.msu |
13CB56A9879CA98D6644E8357B3FC52C9ACFB785 |
3359638FE3CF59FF4332B2490339050EAEA2368EA1F64AB21838C6E60DB4165D |
|
Windows8-RT-KB3076949-x86.msu |
3E0BA36FDCB0911C66C557C7C1A55877490525DF |
0C31DAE892AA39FEF310961CF74C8886AB68E601BD842914C487E7A851C5679F |
|
Windows8-RT-KB3076949-x64.msu |
8DADDA02FA80E8F642C9BE33DF88157428AEEC96 |
A188E2BC097756C475BD73A5EFE2A918483BFB4B7865CCE293DFCBAD94EB21D2 |
|
Windows8.1-KB3076949-x86.msu |
BAF4582CF62D5627116FB7193A567FB5445CDB00 |
05A201ABEFC62D07110DCC015FAEBF6B0F329CD2C5334E25A80A147661C5AF27 |
|
Windows8.1-KB3076949-x64.msu |
B9FAE4CFC9E1B64B612BF9844119ED40747A2DB6 |
47F67969EC66F81AA6BB305174E63F6283A3CB033AD5A041CFFD40319EB95D0B |
|
Windows8-RT-KB3076949-arm.msu |
D944FAA57AB33A8DA53219CD2DBA411D714A24FA |
F04864D34A5161F35E81E5208600C3420EE26EA574C3BCBE9106E21D36F0BFD1 |
|
Windows8.1-KB3076949-arm.msu |
BD921E99258E1001ECC3CD023E7651CE43B8EAE8 |
9357135F6BAEA8A15D53A0A065E42B0E1DE462C917446793A544219190FD4E91 |
|
Windows6.0-KB3076949-x86.msu |
BA127E74BA7EDD3863CDE512B855706C807EDB2C |
2F2353437CF36625C051DAF991ED9DB7272C1A225F1789B6E643FD4B457B7C07 |
|
Windows6.0-KB3076949-x86.msu |
BA127E74BA7EDD3863CDE512B855706C807EDB2C |
2F2353437CF36625C051DAF991ED9DB7272C1A225F1789B6E643FD4B457B7C07 |
|
Windows6.0-KB3076949-x64.msu |
70EB7E27870702D8629BD3DF15B353F277398B83 |
F3930CB112A0783F7AEC3C9458C534F38A80C8398742C475FFBF7C0857C0C7E3 |
|
Windows6.0-KB3076949-x64.msu |
70EB7E27870702D8629BD3DF15B353F277398B83 |
F3930CB112A0783F7AEC3C9458C534F38A80C8398742C475FFBF7C0857C0C7E3 |
|
Windows6.1-KB3076949-x64.msu |
13CB56A9879CA98D6644E8357B3FC52C9ACFB785 |
3359638FE3CF59FF4332B2490339050EAEA2368EA1F64AB21838C6E60DB4165D |
|
Windows6.1-KB3076949-x64.msu |
13CB56A9879CA98D6644E8357B3FC52C9ACFB785 |
3359638FE3CF59FF4332B2490339050EAEA2368EA1F64AB21838C6E60DB4165D |
|
Windows8-RT-KB3076949-x64.msu |
8DADDA02FA80E8F642C9BE33DF88157428AEEC96 |
A188E2BC097756C475BD73A5EFE2A918483BFB4B7865CCE293DFCBAD94EB21D2 |
|
Windows8-RT-KB3076949-x86.msu |
3E0BA36FDCB0911C66C557C7C1A55877490525DF |
0C31DAE892AA39FEF310961CF74C8886AB68E601BD842914C487E7A851C5679F |
|
Windows8-RT-KB3076949-x64.msu |
8DADDA02FA80E8F642C9BE33DF88157428AEEC96 |
A188E2BC097756C475BD73A5EFE2A918483BFB4B7865CCE293DFCBAD94EB21D2 |
|
Windows8-RT-KB3076949-x86.msu |
3E0BA36FDCB0911C66C557C7C1A55877490525DF |
0C31DAE892AA39FEF310961CF74C8886AB68E601BD842914C487E7A851C5679F |
|
Windows8.1-KB3076949-x64.msu |
B9FAE4CFC9E1B64B612BF9844119ED40747A2DB6 |
47F67969EC66F81AA6BB305174E63F6283A3CB033AD5A041CFFD40319EB95D0B |
|
Windows8.1-KB3076949-x86.msu |
BAF4582CF62D5627116FB7193A567FB5445CDB00 |
05A201ABEFC62D07110DCC015FAEBF6B0F329CD2C5334E25A80A147661C5AF27 |
|
Windows8.1-KB3076949-x86.msu |
BAF4582CF62D5627116FB7193A567FB5445CDB00 |
05A201ABEFC62D07110DCC015FAEBF6B0F329CD2C5334E25A80A147661C5AF27 |
|
Windows8.1-KB3076949-x64.msu |
B9FAE4CFC9E1B64B612BF9844119ED40747A2DB6 |
47F67969EC66F81AA6BB305174E63F6283A3CB033AD5A041CFFD40319EB95D0B |
|
Windows6.0-KB3076949-x86.msu |
BA127E74BA7EDD3863CDE512B855706C807EDB2C |
2F2353437CF36625C051DAF991ED9DB7272C1A225F1789B6E643FD4B457B7C07 |
|
Windows6.0-KB3076949-x64.msu |
70EB7E27870702D8629BD3DF15B353F277398B83 |
F3930CB112A0783F7AEC3C9458C534F38A80C8398742C475FFBF7C0857C0C7E3 |
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.
Windows Vista and Windows Server 2008 file information
-
The files that apply to a specific product, milestone (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
6.0.6002.18xxx
Windows Vista SP2 and Windows Server 2008 SP2
SP2
GDR
6.0.6002.23xxx
Windows Vista SP2 and Windows Server 2008 SP2
SP2
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.
Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
For all supported x86-based versions of Windows Vista and Windows Server 2008
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Webclnt.dll |
6.0.6002.19433 |
199,680 |
01-Jul-2015 |
15:57 |
x86 |
|
Webclnt.dll |
6.0.6002.23739 |
199,680 |
01-Jul-2015 |
15:31 |
x86 |
For all supported x64-based versions of Windows Vista and Windows Server 2008
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Webclnt.dll |
6.0.6002.19433 |
218,112 |
01-Jul-2015 |
15:43 |
x64 |
|
Webclnt.dll |
6.0.6002.23739 |
218,624 |
01-Jul-2015 |
15:24 |
x64 |
|
Webclnt.dll |
6.0.6002.19433 |
199,680 |
01-Jul-2015 |
15:57 |
x86 |
|
Webclnt.dll |
6.0.6002.23739 |
199,680 |
01-Jul-2015 |
15:31 |
x86 |
Windows 7 and Windows Server 2008 R2 file information
-
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
6.1.7601.18xxx
Windows 7 and Windows Server 2008 R2
SP1
GDR
6.1.7601.22xxx
Windows 7 and 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.
Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
For all supported x86-based versions of Windows 7
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Davclnt.dll |
6.1.7601.18912 |
82,432 |
01-Jul-2015 |
20:30 |
x86 |
|
Davclnt.dll |
6.1.7601.23115 |
87,552 |
01-Jul-2015 |
17:52 |
x86 |
|
Webclnt.dll |
6.1.7601.18912 |
206,848 |
01-Jul-2015 |
20:30 |
x86 |
|
Webclnt.dll |
6.1.7601.23115 |
209,920 |
01-Jul-2015 |
17:52 |
x86 |
For all supported x64-based versions of Windows 7 and Windows Server 2008 R2
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Davclnt.dll |
6.1.7601.18912 |
102,912 |
01-Jul-2015 |
20:48 |
x64 |
|
Davclnt.dll |
6.1.7601.23115 |
109,056 |
01-Jul-2015 |
18:20 |
x64 |
|
Webclnt.dll |
6.1.7601.18912 |
260,096 |
01-Jul-2015 |
20:49 |
x64 |
|
Webclnt.dll |
6.1.7601.23115 |
264,704 |
01-Jul-2015 |
18:21 |
x64 |
|
Davclnt.dll |
6.1.7601.18912 |
82,432 |
01-Jul-2015 |
20:30 |
x86 |
|
Davclnt.dll |
6.1.7601.23115 |
87,552 |
01-Jul-2015 |
17:52 |
x86 |
|
Webclnt.dll |
6.1.7601.18912 |
206,848 |
01-Jul-2015 |
20:30 |
x86 |
|
Webclnt.dll |
6.1.7601.23115 |
209,920 |
01-Jul-2015 |
17:52 |
x86 |
Windows 8 and Windows Server 2012 file information
-
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 0.16 xxx
Windows 8 and Windows Server 2012
RTM
GDR
6.2.920 0.20 xxx
Windows 8 and 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.
Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
For all supported x86-based versions of Windows 8
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Davclnt.dll |
6.2.9200.17428 |
86,016 |
01-Jul-2015 |
11:41 |
x86 |
|
Davclnt.dll |
6.2.9200.21538 |
86,016 |
01-Jul-2015 |
10:54 |
x86 |
|
Webclnt.dll |
6.2.9200.17428 |
198,656 |
01-Jul-2015 |
11:42 |
x86 |
|
Webclnt.dll |
6.2.9200.21538 |
199,168 |
01-Jul-2015 |
10:55 |
x86 |
For all supported x64-based versions of Windows 8 and Windows Server 2012
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Davclnt.dll |
6.2.9200.17428 |
104,448 |
01-Jul-2015 |
12:58 |
x64 |
|
Davclnt.dll |
6.2.9200.21538 |
104,448 |
01-Jul-2015 |
11:39 |
x64 |
|
Webclnt.dll |
6.2.9200.17428 |
227,328 |
01-Jul-2015 |
13:00 |
x64 |
|
Webclnt.dll |
6.2.9200.21538 |
227,840 |
01-Jul-2015 |
11:41 |
x64 |
|
Davclnt.dll |
6.2.9200.17428 |
86,016 |
01-Jul-2015 |
11:41 |
x86 |
|
Davclnt.dll |
6.2.9200.21538 |
86,016 |
01-Jul-2015 |
10:54 |
x86 |
|
Davclnt.dll |
6.2.9200.17428 |
86,016 |
01-Jul-2015 |
11:41 |
x86 |
|
Davclnt.dll |
6.2.9200.21538 |
86,016 |
01-Jul-2015 |
10:54 |
x86 |
|
Webclnt.dll |
6.2.9200.17428 |
198,656 |
01-Jul-2015 |
11:42 |
x86 |
|
Webclnt.dll |
6.2.9200.21538 |
199,168 |
01-Jul-2015 |
10:55 |
x86 |
Windows 8.1 and Windows Server 2012 R2 file information
-
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
6.3.920 0.16 xxx
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.
Note The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.
For all supported x86-based versions of Windows 8.1
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Davclnt.dll |
6.3.9600.17923 |
87,040 |
01-Jul-2015 |
21:35 |
x86 |
|
Webclnt.dll |
6.3.9600.17923 |
198,656 |
01-Jul-2015 |
21:37 |
x86 |
For all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Davclnt.dll |
6.3.9600.17923 |
104,448 |
01-Jul-2015 |
22:16 |
x64 |
|
Webclnt.dll |
6.3.9600.17923 |
228,864 |
01-Jul-2015 |
22:19 |
x64 |
|
Davclnt.dll |
6.3.9600.17923 |
87,040 |
01-Jul-2015 |
21:35 |
x86 |
|
Davclnt.dll |
6.3.9600.17923 |
87,040 |
01-Jul-2015 |
21:35 |
x86 |
|
Webclnt.dll |
6.3.9600.17923 |
198,656 |
01-Jul-2015 |
21:37 |
x86 |
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
