Symptoms
Consider the following scenario:
-
In Microsoft Internet Information Services (IIS) 7.0 or in IIS 7.5, you have a webpage in an application that accepts a POST request and then redirects to a different webpage.
-
You enable output caching on the application, and the cache is built up after you send GET requests to the webpage together with parameters.
-
A POST request is sent to the webpage.
In this scenario, the webpage is not redirected as expected.
For example, you build a default.aspx webpage that contains a button. The webpage contains the following code under the Button click event.
protected void Button1_Click(object sender, EventArgs e)
{
Response.Redirect("./hello.aspx", false);
}
When a request accesses the default.aspx webpage and then the button is clicked, a POST request is submitted. HTTP code 302 is logged, and the webpage is redirected successfully to the hello.aspx webpage.
In this example, the IIS log contains an entry that resembles the following for the POST request:
#Fields: datetime s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) sc-status sc-substatus sc-win32-status time-taken
datetime ::1 POST /folder_name/default.aspx id=1 80 - ::1 Mozilla/5.0+(compatible;+MSIE+9.0;+Windows+NT+6.1;+WOW64;+Trident/5.0) 302 0 0 6
However, if lots of GET requests access the default.aspx?id=1 webpage and the IIS cache is built up, you are not redirected to the hello.aspx webpage when you click the button on the default.aspx webpage. Instead, an HTTP code 200 is logged in the IIS log. The STTP code 200 resembles the following:
#Fields: datetime s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) sc-status sc-substatus sc-win32-status time-taken
datetime ::1 POST /folder_name/default.aspx id=1 80 - ::1 Mozilla/5.0+(compatible;+MSIE+9.0;+Windows+NT+6.1;+WOW64;+Trident/5.0) 200 0 0 6
Cause
This problem occurs because the POST request is served incorrectly from the IIS cache that is built up by the GET requests.
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
You must have IIS 7.0 or IIS 7.5 installed on one of the following operating systems to apply this hotfix:
-
Windows 7
-
Windows 7 Service Pack 1 (SP1)
-
Windows Server 2008 R2
-
Windows Server 2008 R2 Service Pack 1 (SP1)
-
Windows Vista Service Pack 2 (SP2)
-
Windows Server 2008 Service Pack 2 (SP2)
Restart information
You must restart the computer if IIS is running when you apply this update.
Replacement information
This hotfix does not replace a previously released hotfix.
File information
The English 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.
Windows Vista and Windows Server 2008 file information notes
Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" 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
6.0.6000.16xxx
Windows Vista
RTM
GDR
6.0.6000.20xxx
Windows Vista
RTM
LDR
6.0.6001.18xxx
Windows Vista SP1 and Windows Server 2008 SP1
SP1
GDR
6.0.6001.22xxx
Windows Vista SP1 and Windows Server 2008 SP1
SP1
LDR
6.0.6002.18xxx
Windows Vista SP2 and Windows Server 2008 SP2
SP2
GDR
6.0.6002.22xxx
Windows Vista SP2 and Windows Server 2008 SP2
SP2
LDR
-
Service Pack 1 is integrated into the original release version of Windows Server 2008. Therefore, RTM milestone files apply only to Windows Vista. RTM milestone files have a 6.0.0000.xxxxxx version number.
-
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 for Windows Server 2008 and for Windows Vista" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. 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 Vista and of Windows Server 2008
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Cachhttp.dll |
7.0.6002.22739 |
44,032 |
06-Nov-2011 |
00:03 |
x86 |
For all supported x64-based versions of Windows Vista and of Windows Server 2008
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Cachhttp.dll |
7.0.6002.22739 |
55,808 |
07-Nov-2011 |
09:12 |
x64 |
For all supported IA-64-based versions of Windows Server 2008
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Cachhttp.dll |
7.0.6002.22739 |
121,344 |
06-Nov-2011 |
17:49 |
IA-64 |
Windows 7 and Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 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 7/Windows Server 2008 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
6.1.7600.16xxx
Windows 7 and Windows Server 2008 R2
RTM
GDR
6.1.7600.20xxx
Windows 7 and Windows Server 2008 R2
RTM
LDR
6.1.7601.17xxx
Windows 7 and Windows Server 2008 R2
SP1
GDR
6.1.7601.21xxx
Windows 7 and Windows Server 2008 R2
SP1
LDR
-
The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 7 and for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely 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 7
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Cachhttp.dll |
7.5.7600.21087 |
44,544 |
08-Nov-2011 |
05:27 |
x86 |
|
Cachhttp.dll |
7.5.7601.21857 |
44,544 |
08-Nov-2011 |
05:20 |
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 |
|---|---|---|---|---|---|
|
Cachhttp.dll |
7.5.7600.21087 |
55,808 |
08-Nov-2011 |
06:20 |
x64 |
|
Cachhttp.dll |
7.5.7601.21857 |
55,808 |
08-Nov-2011 |
06:22 |
x64 |
For all supported IA-64-based versions of Windows Server 2008 R2
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Cachhttp.dll |
7.5.7600.21087 |
124,928 |
08-Nov-2011 |
05:14 |
IA-64 |
|
Cachhttp.dll |
7.5.7601.21857 |
124,928 |
08-Nov-2011 |
05:16 |
IA-64 |
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 how to enable output caching, visit the following Microsoft TechNet website:
Enable Output Caching (IIS 7)For more information about status codes in IIS 7.0 and in IIS 7.5, click the following article number to view the article in the Microsoft Knowledge Base:
943891 The HTTP status codes in IIS 7.0 and IIS 7.5For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
Additional file information
Additional file information for Windows Vista and for Windows Server 2008
Additional files for all supported x86-based versions of Windows Vista and of Windows Server 2008
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
3,858 |
|
Date (UTC) |
07-Nov-2011 |
|
Time (UTC) |
14:48 |
|
File name |
X86_10c1b06b52db93a600ee321b49b5f252_31bf3856ad364e35_6.0.6002.22739_none_445bbfac97f78a24.manifest |
|
File version |
Not applicable |
|
File size |
701 |
|
Date (UTC) |
07-Nov-2011 |
|
Time (UTC) |
14:48 |
|
File name |
X86_microsoft-windows-iis-httpcache_31bf3856ad364e35_6.0.6002.22739_none_62187f45ed48a187.manifest |
|
File version |
Not applicable |
|
File size |
5,373 |
|
Date (UTC) |
06-Nov-2011 |
|
Time (UTC) |
00:25 |
Additional files for all supported x64-based versions of Windows Vista and of Windows Server 2008
|
File name |
Amd64_dd918a0aadb0177c4dd7e383891895a4_31bf3856ad364e35_6.0.6002.22739_none_437723aabe48ca50.manifest |
|
File version |
Not applicable |
|
File size |
1,052 |
|
Date (UTC) |
07-Nov-2011 |
|
Time (UTC) |
14:48 |
|
File name |
Amd64_microsoft-windows-iis-httpcache_31bf3856ad364e35_6.0.6002.22739_none_be371ac9a5a612bd.manifest |
|
File version |
Not applicable |
|
File size |
5,385 |
|
Date (UTC) |
07-Nov-2011 |
|
Time (UTC) |
09:34 |
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
3,890 |
|
Date (UTC) |
07-Nov-2011 |
|
Time (UTC) |
14:48 |
|
File name |
Wow64_microsoft-windows-iis-httpcache_31bf3856ad364e35_6.0.6002.22739_none_c88bc51bda06d4b8.manifest |
|
File version |
Not applicable |
|
File size |
3,527 |
|
Date (UTC) |
06-Nov-2011 |
|
Time (UTC) |
00:13 |
Additional files for all supported IA-64-based versions of Windows Server 2008
|
File name |
Ia64_00e9e8826bb4cd966507f9acff634b42_31bf3856ad364e35_6.0.6002.22739_none_30348a89e8625c55.manifest |
|
File version |
Not applicable |
|
File size |
1,050 |
|
Date (UTC) |
07-Nov-2011 |
|
Time (UTC) |
14:48 |
|
File name |
Ia64_microsoft-windows-iis-httpcache_31bf3856ad364e35_6.0.6002.22739_none_621a233bed46aa83.manifest |
|
File version |
Not applicable |
|
File size |
5,379 |
|
Date (UTC) |
06-Nov-2011 |
|
Time (UTC) |
18:02 |
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
1,993 |
|
Date (UTC) |
07-Nov-2011 |
|
Time (UTC) |
14:48 |
|
File name |
Wow64_microsoft-windows-iis-httpcache_31bf3856ad364e35_6.0.6002.22739_none_c88bc51bda06d4b8.manifest |
|
File version |
Not applicable |
|
File size |
3,527 |
|
Date (UTC) |
06-Nov-2011 |
|
Time (UTC) |
00:13 |
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 |
3,286 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
22:50 |
|
File name |
X86_82b0926227c341a23a30e94cf2c6fbdb_31bf3856ad364e35_6.1.7601.21857_none_2ecff1c3c68923a8.manifest |
|
File version |
Not applicable |
|
File size |
709 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
22:50 |
|
File name |
X86_c432af2292c6c46598313f802e4d8fd4_31bf3856ad364e35_6.1.7600.21087_none_9c482e90570156e3.manifest |
|
File version |
Not applicable |
|
File size |
709 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
22:49 |
|
File name |
X86_microsoft-windows-iis-httpcachebinaries_31bf3856ad364e35_6.1.7600.21087_none_9b8711456e41e4fb.manifest |
|
File version |
Not applicable |
|
File size |
3,291 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
06:33 |
|
File name |
X86_microsoft-windows-iis-httpcachebinaries_31bf3856ad364e35_6.1.7601.21857_none_9d8e07d36b4fc6f9.manifest |
|
File version |
Not applicable |
|
File size |
3,291 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
06:15 |
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
|
File name |
Amd64_508c1ed8d9dbc05d9026e0b47469a0fc_31bf3856ad364e35_6.1.7601.21857_none_6d48290505f57fb6.manifest |
|
File version |
Not applicable |
|
File size |
1,068 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
22:50 |
|
File name |
Amd64_ab8ac778822c9544e1b88ca62b0579d2_31bf3856ad364e35_6.1.7600.21087_none_ce6b20c94842af5c.manifest |
|
File version |
Not applicable |
|
File size |
1,068 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
22:50 |
|
File name |
Amd64_microsoft-windows-iis-httpcachebinaries_31bf3856ad364e35_6.1.7600.21087_none_f7a5acc9269f5631.manifest |
|
File version |
Not applicable |
|
File size |
3,297 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
07:21 |
|
File name |
Amd64_microsoft-windows-iis-httpcachebinaries_31bf3856ad364e35_6.1.7601.21857_none_f9aca35723ad382f.manifest |
|
File version |
Not applicable |
|
File size |
3,297 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
07:21 |
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
3,728 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
22:50 |
|
File name |
Wow64_microsoft-windows-iis-httpcachebinaries_31bf3856ad364e35_6.1.7600.21087_none_01fa571b5b00182c.manifest |
|
File version |
Not applicable |
|
File size |
2,980 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
05:58 |
|
File name |
Wow64_microsoft-windows-iis-httpcachebinaries_31bf3856ad364e35_6.1.7601.21857_none_04014da9580dfa2a.manifest |
|
File version |
Not applicable |
|
File size |
2,980 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
05:55 |
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
|
File name |
Ia64_785a5f000b89910566c650c754cbbca8_31bf3856ad364e35_6.1.7600.21087_none_0636ba9b68c4d3d9.manifest |
|
File version |
Not applicable |
|
File size |
1,066 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
22:49 |
|
File name |
Ia64_ee01dc3b5726aa68e0b53b715d906739_31bf3856ad364e35_6.1.7601.21857_none_5e88f3064d966308.manifest |
|
File version |
Not applicable |
|
File size |
1,066 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
22:49 |
|
File name |
Ia64_microsoft-windows-iis-httpcachebinaries_31bf3856ad364e35_6.1.7600.21087_none_9b88b53b6e3fedf7.manifest |
|
File version |
Not applicable |
|
File size |
3,294 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
06:55 |
|
File name |
Ia64_microsoft-windows-iis-httpcachebinaries_31bf3856ad364e35_6.1.7601.21857_none_9d8fabc96b4dcff5.manifest |
|
File version |
Not applicable |
|
File size |
3,294 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
06:48 |
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
2,767 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
22:49 |
|
File name |
Wow64_microsoft-windows-iis-httpcachebinaries_31bf3856ad364e35_6.1.7600.21087_none_01fa571b5b00182c.manifest |
|
File version |
Not applicable |
|
File size |
2,980 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
05:58 |
|
File name |
Wow64_microsoft-windows-iis-httpcachebinaries_31bf3856ad364e35_6.1.7601.21857_none_04014da9580dfa2a.manifest |
|
File version |
Not applicable |
|
File size |
2,980 |
|
Date (UTC) |
08-Nov-2011 |
|
Time (UTC) |
05:55 |
