Symptoms
Consider the following scenario:
-
You have a computer that is running Windows 8.1, Windows RT 8.1, Windows Server 2012 R2, Windows 7 Service Pack 1 (SP1), or Windows Server 2008 R2 SP1.
-
You have access-based enumeration enabled on a shared folder. Or you enable access-based enumeration on a DFS namespace on a folder.
-
You use the Server Message Block 2.0 file-sharing protocol. By default, this protocol is used on Windows-based computers.
-
You try to browse the contents of the shared folder. Or you try to do any other standard work that involves shared files.
In this scenario, CPU usage of the server seems to spike close to 100 percent, and you may experience performance issues such as delays.
Resolution
Hotfix information
A supported hotfix is available from Microsoft Support. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, go to the following Microsoft website:
http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
Prerequisites
To apply this hotfix, install update 2919355 in Windows 8.1 or Windows Server 2012 R2. Or, install Service Pack 1 in Windows 7 or Windows Server 2008 R2.
Restart requirement
You must restart the computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace any previously released hotfix.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.
File Information
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). Be aware that dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time bias. The dates and times may also change when you perform certain operations on the files.
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 1.22 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 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.
x86 Windows 7
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Srv2.sys |
6.1.7601.22547 |
313,856 |
20-Dec-2013 |
01:00 |
x86 |
x64 Windows 7 and Windows Server 2008 R2
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Srv2.sys |
6.1.7601.22547 |
406,016 |
20-Dec-2013 |
01:16 |
x64 |
ia64 Windows Server 2008 R2
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Srv2.sys |
6.1.7601.22547 |
799,232 |
20-Dec-2013 |
00:41 |
IA-64 |
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 0.18 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 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 RT 8.1
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Srv2.sys |
6.3.9600.18111 |
521,728 |
28-Oct-2015 |
16:24 |
Not applicable |
x86 Windows 8.1
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Srv2.sys |
6.3.9600.18111 |
562,688 |
28-Oct-2015 |
16:43 |
x86 |
x64 Windows 8.1 and Windows Server 2012 R2
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Srv2.sys |
6.3.9600.18111 |
677,376 |
28-Oct-2015 |
17:35 |
x64 |
x86 Windows 7
|
File property |
Value |
|---|---|
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
1,643 |
|
Date (UTC) |
20-Dec-2013 |
|
Time (UTC) |
06:51 |
|
Platform |
Not applicable |
|
File name |
X86_36ebf8214e5828facbd0a32f76310226_31bf3856ad364e35_6.1.7601.22547_none_fd997073fc0a950c.manifest |
|
File version |
Not applicable |
|
File size |
700 |
|
Date (UTC) |
20-Dec-2013 |
|
Time (UTC) |
06:51 |
|
Platform |
Not applicable |
|
File name |
X86_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7601.22547_none_dc6018916df128ed.manifest |
|
File version |
Not applicable |
|
File size |
2,655 |
|
Date (UTC) |
20-Dec-2013 |
|
Time (UTC) |
02:37 |
|
Platform |
Not applicable |
x64 Windows 7 and Windows Server 2008 R2
|
File property |
Value |
|---|---|
|
File name |
Amd64_63da24375a34d4d449457e3be5eb8da8_31bf3856ad364e35_6.1.7601.22547_none_82c1fdbb0205ba24.manifest |
|
File version |
Not applicable |
|
File size |
704 |
|
Date (UTC) |
20-Dec-2013 |
|
Time (UTC) |
06:51 |
|
Platform |
Not applicable |
|
File name |
Amd64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7601.22547_none_387eb415264e9a23.manifest |
|
File version |
Not applicable |
|
File size |
2,657 |
|
Date (UTC) |
20-Dec-2013 |
|
Time (UTC) |
03:05 |
|
Platform |
Not applicable |
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
1,853 |
|
Date (UTC) |
20-Dec-2013 |
|
Time (UTC) |
06:51 |
|
Platform |
Not applicable |
ia64 Windows Server 2008 R2
|
File property |
Value |
|---|---|
|
File name |
Ia64_b3b9e3293113963cec166f9ce7e43ccf_31bf3856ad364e35_6.1.7601.22547_none_6dde45114a195541.manifest |
|
File version |
Not applicable |
|
File size |
702 |
|
Date (UTC) |
20-Dec-2013 |
|
Time (UTC) |
06:50 |
|
Platform |
Not applicable |
|
File name |
Ia64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.1.7601.22547_none_dc61bc876def31e9.manifest |
|
File version |
Not applicable |
|
File size |
2,656 |
|
Date (UTC) |
20-Dec-2013 |
|
Time (UTC) |
02:24 |
|
Platform |
Not applicable |
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
1,447 |
|
Date (UTC) |
20-Dec-2013 |
|
Time (UTC) |
06:50 |
|
Platform |
Not applicable |
Windows RT 8.1
|
File property |
Value |
|---|---|
|
File name |
Arm_a88b019c9d0b4e7397f7d2dac6086573_31bf3856ad364e35_6.3.9600.18111_none_c309bfe792bb9a85.manifest |
|
File version |
Not applicable |
|
File size |
700 |
|
Date (UTC) |
29-Oct-2015 |
|
Time (UTC) |
20:45 |
|
Platform |
Not applicable |
|
File name |
Arm_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.3.9600.18111_none_6ed74d8811dc9122.manifest |
|
File version |
Not applicable |
|
File size |
259,944 |
|
Date (UTC) |
28-Oct-2015 |
|
Time (UTC) |
17:07 |
|
Platform |
Not applicable |
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
1,594 |
|
Date (UTC) |
29-Oct-2015 |
|
Time (UTC) |
20:45 |
|
Platform |
Not applicable |
x86 Windows 8.1
|
File property |
Value |
|---|---|
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
1,594 |
|
Date (UTC) |
29-Oct-2015 |
|
Time (UTC) |
20:45 |
|
Platform |
Not applicable |
|
File name |
X86_570b6e0e61bcd21a11508db9b66f5870_31bf3856ad364e35_6.3.9600.18111_none_e84f129369c487c3.manifest |
|
File version |
Not applicable |
|
File size |
700 |
|
Date (UTC) |
29-Oct-2015 |
|
Time (UTC) |
20:45 |
|
Platform |
Not applicable |
|
File name |
X86_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.3.9600.18111_none_6ed4db3011df725c.manifest |
|
File version |
Not applicable |
|
File size |
259,944 |
|
Date (UTC) |
28-Oct-2015 |
|
Time (UTC) |
17:55 |
|
Platform |
Not applicable |
x64 Windows 8.1 and Windows Server 2012 R2
|
File property |
Value |
|---|---|
|
File name |
Amd64_060d1586cd1fa3f95e159143d53cfee2_31bf3856ad364e35_6.3.9600.18111_none_5131c01efb3f6004.manifest |
|
File version |
Not applicable |
|
File size |
704 |
|
Date (UTC) |
29-Oct-2015 |
|
Time (UTC) |
20:45 |
|
Platform |
Not applicable |
|
File name |
Amd64_microsoft-windows-smbserver-v2_31bf3856ad364e35_6.3.9600.18111_none_caf376b3ca3ce392.manifest |
|
File version |
Not applicable |
|
File size |
259,948 |
|
Date (UTC) |
28-Oct-2015 |
|
Time (UTC) |
18:49 |
|
Platform |
Not applicable |
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
1,602 |
|
Date (UTC) |
29-Oct-2015 |
|
Time (UTC) |
20:45 |
|
Platform |
Not applicable |
