Symptoms
Consider the following scenario:
-
You create a virtual directory that points to a Universal Naming Convention (UNC) path of a shared folder share on Internet Information Services (IIS) 7.5.
-
You enable the Output Caching feature in IIS 7.5.
-
You have files in the shared folder. The sizes of the files are larger than the Maximum cached response size limit of the Output Caching feature.
-
The server that is running IIS 7.5 receives a request that requests access to the files.
In this scenario, the server takes more time to send a response than expected.
Note This issue does not occur in Internet Information Services (IIS) 6.0.
Cause
This issue occurs because of an error in the static file handler.
When this error occurs, the static file handler incorrectly registers an FCN handler to monitor the UNC share even when FCNs are disabled on the computer. Therefore, many FCNs have to be processed if many UNC-share files are changed, and the issue that is mentioned in the "Symptoms" section occurs.
Note To disable FCNs on the computer, set the following registry entry to the binary value of 0:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\InetInfo\Parameters\DoDirMonitoringForUNC
Resolution
Hotfix information
A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that 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, visit 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, you must be running one of the following operating systems:
-
Windows 7
-
Windows 7 Service Pack 1 (SP1)
-
Windows Server 2008 R2
-
Windows Server 2008 R2 Service Pack 1 (SP1)
Restart requirement
You do not 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 has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
For all supported x86-based versions of Windows 7
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Static.dll |
7.5.7600.20975 |
38,400 |
28-May-2011 |
04:41 |
x86 |
|
Static.dll |
7.5.7601.21735 |
38,400 |
28-May-2011 |
05:58 |
x86 |
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Static.dll |
7.5.7600.20975 |
40,960 |
28-May-2011 |
05:28 |
x64 |
|
Static.dll |
7.5.7601.21735 |
40,960 |
28-May-2011 |
05:18 |
x64 |
|
Static.dll |
7.5.7600.20975 |
38,400 |
28-May-2011 |
04:41 |
x86 |
|
Static.dll |
7.5.7601.21735 |
38,400 |
28-May-2011 |
05:58 |
x86 |
For all supported IA-64–based versions of Windows Server 2008 R2
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Static.dll |
7.5.7600.20975 |
99,840 |
28-May-2011 |
04:22 |
IA-64 |
|
Static.dll |
7.5.7601.21735 |
99,840 |
28-May-2011 |
04:08 |
IA-64 |
|
Static.dll |
7.5.7600.20975 |
38,400 |
28-May-2011 |
04:41 |
x86 |
|
Static.dll |
7.5.7601.21735 |
38,400 |
28-May-2011 |
05:58 |
x86 |
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More Information
For more information about output caching in IIS 7, visit the following Microsoft website:
General information about output caching in IIS 7For more information about how to debug and tune the HTTP.SYS output cache for IIS 7.5 in Windows Server 2008 R2 , visit the following Microsoft website:
How to debug and tune the HTTP.SYS output cache for IIS 7.5 in Windows Server 2008 R2
Additional file information
Additional file information for Windows 7 and for Windows Server 2008 R2
Additional files for all supported x86-based versions of Windows 7
|
File name |
Update.mum |
|
File version |
Not Applicable |
|
File size |
2,684 |
|
Date (UTC) |
31-May-2011 |
|
Time (UTC) |
18:59 |
|
Platform |
Not Applicable |
|
File name |
X86_27bc706a6bae5115d3a02a0bde039511_31bf3856ad364e35_6.1.7601.21735_none_41616fc28c356691.manifest |
|
File version |
Not Applicable |
|
File size |
713 |
|
Date (UTC) |
31-May-2011 |
|
Time (UTC) |
18:59 |
|
Platform |
Not Applicable |
|
File name |
X86_747c31208e092fb1535fe371584b1432_31bf3856ad364e35_6.1.7600.20975_none_cca9167336313052.manifest |
|
File version |
Not Applicable |
|
File size |
713 |
|
Date (UTC) |
31-May-2011 |
|
Time (UTC) |
18:59 |
|
Platform |
Not Applicable |
|
File name |
X86_microsoft-windows-i..aticcontentbinaries_31bf3856ad364e35_6.1.7600.20975_none_7682b45693f74b35.manifest |
|
File version |
Not Applicable |
|
File size |
3,311 |
|
Date (UTC) |
28-May-2011 |
|
Time (UTC) |
05:13 |
|
Platform |
Not Applicable |
|
File name |
X86_microsoft-windows-i..aticcontentbinaries_31bf3856ad364e35_6.1.7601.21735_none_7894510c90fd475d.manifest |
|
File version |
Not Applicable |
|
File size |
3,311 |
|
Date (UTC) |
28-May-2011 |
|
Time (UTC) |
06:27 |
|
Platform |
Not Applicable |
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
|
File name |
Amd64_72be0542b75202ba927d85573da2e852_31bf3856ad364e35_6.1.7600.20975_none_533b87653b17dd01.manifest |
|
File version |
Not Applicable |
|
File size |
1,076 |
|
Date (UTC) |
31-May-2011 |
|
Time (UTC) |
18:59 |
|
Platform |
Not Applicable |
|
File name |
Amd64_7e216c05f8db4c816164485f1361ea9c_31bf3856ad364e35_6.1.7601.21735_none_9422c16919a3a680.manifest |
|
File version |
Not Applicable |
|
File size |
1,076 |
|
Date (UTC) |
31-May-2011 |
|
Time (UTC) |
18:59 |
|
Platform |
Not Applicable |
|
File name |
Amd64_microsoft-windows-i..aticcontentbinaries_31bf3856ad364e35_6.1.7600.20975_none_d2a14fda4c54bc6b.manifest |
|
File version |
Not Applicable |
|
File size |
3,317 |
|
Date (UTC) |
28-May-2011 |
|
Time (UTC) |
06:11 |
|
Platform |
Not Applicable |
|
File name |
Amd64_microsoft-windows-i..aticcontentbinaries_31bf3856ad364e35_6.1.7601.21735_none_d4b2ec90495ab893.manifest |
|
File version |
Not Applicable |
|
File size |
3,317 |
|
Date (UTC) |
28-May-2011 |
|
Time (UTC) |
07:08 |
|
Platform |
Not Applicable |
|
File name |
Update.mum |
|
File version |
Not Applicable |
|
File size |
3,120 |
|
Date (UTC) |
31-May-2011 |
|
Time (UTC) |
18:59 |
|
Platform |
Not Applicable |
|
File name |
Wow64_microsoft-windows-i..aticcontentbinaries_31bf3856ad364e35_6.1.7600.20975_none_dcf5fa2c80b57e66.manifest |
|
File version |
Not Applicable |
|
File size |
2,992 |
|
Date (UTC) |
28-May-2011 |
|
Time (UTC) |
04:57 |
|
Platform |
Not Applicable |
|
File name |
Wow64_microsoft-windows-i..aticcontentbinaries_31bf3856ad364e35_6.1.7601.21735_none_df0796e27dbb7a8e.manifest |
|
File version |
Not Applicable |
|
File size |
2,992 |
|
Date (UTC) |
28-May-2011 |
|
Time (UTC) |
06:12 |
|
Platform |
Not Applicable |
Additional files for all supported IA-64–based versions of Windows Server 2008 R2
|
File name |
Ia64_7eeab49eb3cfa504e4fabc3ced786ef8_31bf3856ad364e35_6.1.7601.21735_none_aa547ad83786fa54.manifest |
|
File version |
Not Applicable |
|
File size |
1,074 |
|
Date (UTC) |
31-May-2011 |
|
Time (UTC) |
18:59 |
|
Platform |
Not Applicable |
|
File name |
Ia64_a8040d39da5602ae0f8ced6054284cd7_31bf3856ad364e35_6.1.7600.20975_none_ab09b85474e48880.manifest |
|
File version |
Not Applicable |
|
File size |
1,074 |
|
Date (UTC) |
31-May-2011 |
|
Time (UTC) |
18:59 |
|
Platform |
Not Applicable |
|
File name |
Ia64_microsoft-windows-i..aticcontentbinaries_31bf3856ad364e35_6.1.7600.20975_none_7684584c93f55431.manifest |
|
File version |
Not Applicable |
|
File size |
3,314 |
|
Date (UTC) |
28-May-2011 |
|
Time (UTC) |
06:06 |
|
Platform |
Not Applicable |
|
File name |
Ia64_microsoft-windows-i..aticcontentbinaries_31bf3856ad364e35_6.1.7601.21735_none_7895f50290fb5059.manifest |
|
File version |
Not Applicable |
|
File size |
3,314 |
|
Date (UTC) |
28-May-2011 |
|
Time (UTC) |
07:02 |
|
Platform |
Not Applicable |
|
File name |
Update.mum |
|
File version |
Not Applicable |
|
File size |
2,347 |
|
Date (UTC) |
31-May-2011 |
|
Time (UTC) |
18:59 |
|
Platform |
Not Applicable |
|
File name |
Wow64_microsoft-windows-i..aticcontentbinaries_31bf3856ad364e35_6.1.7600.20975_none_dcf5fa2c80b57e66.manifest |
|
File version |
Not Applicable |
|
File size |
2,992 |
|
Date (UTC) |
28-May-2011 |
|
Time (UTC) |
04:57 |
|
Platform |
Not Applicable |
|
File name |
Wow64_microsoft-windows-i..aticcontentbinaries_31bf3856ad364e35_6.1.7601.21735_none_df0796e27dbb7a8e.manifest |
|
File version |
Not Applicable |
|
File size |
2,992 |
|
Date (UTC) |
28-May-2011 |
|
Time (UTC) |
06:12 |
|
Platform |
Not Applicable |
