Symptoms
You have Internet Information Services (IIS) 7.0 or IIS 7.5 installed. You run a Microsoft ASP.NET Web application in IIS 7.0 or IIS 7.5. However, the Web application intermittently stops working. Additionally, the following event is logged in the Application log:Â
Cause
This issue occurs because of an error in the IHttpConnection::IsConnected method. If the IHttpConnection::IsConnected method is called immediately after a Web client connection is dropped, the method incorrectly returns a true value instead of a
false value. Therefore, the COMException exception occurs.
Resolution
Hotfix information
A supported hotfix is available from Microsoft. 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, visit the following Microsoft Web site:
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 have IIS 7.0 or IIS 7.5 installed on a computer that is running one of the following operating systems:
-
Windows Vista Service Pack 1 (SP1)
-
Windows Vista Service Pack 2 (SP2)
-
Windows 7
-
Windows Server 2008
-
Windows Server 2008 SP2
-
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 other hotfixes.
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.
For all supported x86-based versions of Windows Server 2008 and of Windows Vista
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Iiscore.dll |
7.0.6001.22628 |
190,976 |
09-Feb-2010 |
14:40 |
x86 |
For all supported x64-based versions of Windows Server 2008 and of Windows Vista
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Iiscore.dll |
7.0.6001.22628 |
290,304 |
09-Feb-2010 |
15:01 |
x64 |
For all supported IA-64-based versions of Windows Server 2008
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Iiscore.dll |
7.0.6001.22628 |
545,792 |
09-Feb-2010 |
16:31 |
IA-64 |
For all supported x86-based versions of Windows 7
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Iiscore.dll |
7.5.7600.20906 |
198,144 |
22-Feb-2011 |
05:56 |
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 |
|---|---|---|---|---|---|
|
Iiscore.dll |
7.5.7600.20906 |
314,368 |
22-Feb-2011 |
06:30 |
x64 |
For all supported IA-64-based versions of Windows Server 2008 R2
|
File name |
File version |
File size |
Date |
Time |
Platform |
|---|---|---|---|---|---|
|
Iiscore.dll |
7.5.7600.20906 |
575,488 |
22-Feb-2011 |
05:22 |
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
After you apply this hotfix, the error in the IHttpConnection::IsConnected method no longer occurs. However, the event that is described in the "Symptoms" section may continue to appear in the Application log because this event may occur during typical operations. Typically, this event occurs when the client that is sending POST data disconnects from the Web server. To determine whether the event is expected, check the IIS 7.0 log files for the request that was referenced in the Application log. Then, verify the Win32 status code. If the sc-win32-status value is "64" and if the request is a POST operation, the event has occurred because the client disconnected. The following is a sample IIS log entry that has Win32 status logging enabled:For more information about the IHttpConnection::IsConnected method, visit the following Microsoft Developer Network (MSDN) Web site:
The IHttpConnection::IsConnected method in IIS 7.0
Additional file information
Additional file information for Windows Server 2008 and for Windows Vista
Additional file information for all supported x86-based versions of Windows Server 2008 and of Windows Vista
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
5,655 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
X86_459419da7aa80ee1b38fc54c3deb2245_31bf3856ad364e35_6.0.6002.22332_none_ac49b4338b38222b.manifest |
|
File version |
Not applicable |
|
File size |
705 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
X86_aacbaa8b8b0a30e953cd0f66ba22b355_31bf3856ad364e35_6.0.6001.22628_none_c354576b419ee1ac.manifest |
|
File version |
Not applicable |
|
File size |
1,032 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
X86_be4e80fff463d8eda22398701921fef5_31bf3856ad364e35_6.0.6001.22628_none_5b84e4e7e3273863.manifest |
|
File version |
Not applicable |
|
File size |
705 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
X86_cef3c97e947e946f01c1af74ae7fa995_31bf3856ad364e35_6.0.6002.22332_none_84a8a8b0062ec660.manifest |
|
File version |
Not applicable |
|
File size |
696 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
X86_e6a9cfc8990638204dab4715795d7e7d_31bf3856ad364e35_6.0.6002.22332_none_261faba572bc0d49.manifest |
|
File version |
Not applicable |
|
File size |
692 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
X86_f3d922e0f07a0141f1b738a703e4e7c3_31bf3856ad364e35_6.0.6001.22628_none_2b194e200e8e32b8.manifest |
|
File version |
Not applicable |
|
File size |
696 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
X86_microsoft-windows-http-api_31bf3856ad364e35_6.0.6001.22628_none_f62845c0b6726dfa.manifest |
|
File version |
Not applicable |
|
File size |
4,708 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
16:40 |
|
File name |
X86_microsoft-windows-http-api_31bf3856ad364e35_6.0.6002.22332_none_f7fde600b3a64705.manifest |
|
File version |
Not applicable |
|
File size |
4,708 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
18:19 |
|
File name |
X86_microsoft-windows-http_31bf3856ad364e35_6.0.6001.22628_none_ad3d050a3201813f.manifest |
|
File version |
Not applicable |
|
File size |
144,304 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
16:43 |
|
File name |
X86_microsoft-windows-http_31bf3856ad364e35_6.0.6002.22332_none_af12a54a2f355a4a.manifest |
|
File version |
Not applicable |
|
File size |
144,703 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
18:21 |
|
File name |
X86_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.0.6001.22628_none_d02610e8426b5144.manifest |
|
File version |
Not applicable |
|
File size |
16,238 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
16:38 |
|
File name |
X86_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.0.6002.22332_none_d1fbb1283f9f2a4f.manifest |
|
File version |
Not applicable |
|
File size |
16,238 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
18:18 |
Additional file information for all supported x64-based versions of Windows Server 2008 and of Windows Vista
|
File name |
Amd64_10646cb0f41677f483cd3cd2303d4b10_31bf3856ad364e35_6.0.6001.22628_none_39c0fdc0391dc6a2.manifest |
|
File version |
Not applicable |
|
File size |
1,378 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Amd64_344104877f55af34a0121baca384f58a_31bf3856ad364e35_6.0.6001.22628_none_66c81b17b887dd71.manifest |
|
File version |
Not applicable |
|
File size |
1,060 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Amd64_5dd7b46a7d72995a1f5e42e53308c644_31bf3856ad364e35_6.0.6002.22332_none_01ad1ef8fe9886e6.manifest |
|
File version |
Not applicable |
|
File size |
1,060 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Amd64_95a8da081f8afc42e5923864c9806f30_31bf3856ad364e35_6.0.6002.22332_none_c9de5c56c840f5eb.manifest |
|
File version |
Not applicable |
|
File size |
1,040 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Amd64_ec00355e725987e6ede140347a74ccd2_31bf3856ad364e35_6.0.6002.22332_none_e162cc268b53baa1.manifest |
|
File version |
Not applicable |
|
File size |
696 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Amd64_f31b015dcb2ccd821a1882d4418fcc17_31bf3856ad364e35_6.0.6001.22628_none_50e113ac1b1cf0a3.manifest |
|
File version |
Not applicable |
|
File size |
700 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Amd64_microsoft-windows-http-api_31bf3856ad364e35_6.0.6001.22628_none_5246e1446ecfdf30.manifest |
|
File version |
Not applicable |
|
File size |
4,722 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
17:01 |
|
File name |
Amd64_microsoft-windows-http-api_31bf3856ad364e35_6.0.6002.22332_none_541c81846c03b83b.manifest |
|
File version |
Not applicable |
|
File size |
4,722 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
16:01 |
|
File name |
Amd64_microsoft-windows-http_31bf3856ad364e35_6.0.6001.22628_none_095ba08dea5ef275.manifest |
|
File version |
Not applicable |
|
File size |
144,568 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
17:07 |
|
File name |
Amd64_microsoft-windows-http_31bf3856ad364e35_6.0.6002.22332_none_0b3140cde792cb80.manifest |
|
File version |
Not applicable |
|
File size |
144,967 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
16:03 |
|
File name |
Amd64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.0.6001.22628_none_2c44ac6bfac8c27a.manifest |
|
File version |
Not applicable |
|
File size |
16,270 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
16:56 |
|
File name |
Amd64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.0.6002.22332_none_2e1a4cabf7fc9b85.manifest |
|
File version |
Not applicable |
|
File size |
16,270 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
15:59 |
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
5,705 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Wow64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.0.6001.22628_none_369956be2f298475.manifest |
|
File version |
Not applicable |
|
File size |
9,710 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
16:30 |
|
File name |
Wow64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.0.6002.22332_none_386ef6fe2c5d5d80.manifest |
|
File version |
Not applicable |
|
File size |
9,710 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
18:12 |
|
File name |
X86_microsoft-windows-http-api_31bf3856ad364e35_6.0.6001.22628_none_f62845c0b6726dfa.manifest |
|
File version |
Not applicable |
|
File size |
4,708 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
16:40 |
|
File name |
X86_microsoft-windows-http-api_31bf3856ad364e35_6.0.6002.22332_none_f7fde600b3a64705.manifest |
|
File version |
Not applicable |
|
File size |
4,708 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
18:19 |
Additional file information for all supported IA-64-based versions of Windows Server 2008
|
File name |
Ia64_4c193713945f0884a388b76b8eabe05b_31bf3856ad364e35_6.0.6001.22628_none_7a72a24f9b2e2fe6.manifest |
|
File version |
Not applicable |
|
File size |
1,058 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Ia64_7ea7a4aee65409d4040eff05a5bc7249_31bf3856ad364e35_6.0.6002.22332_none_cf9ff08ede0a698c.manifest |
|
File version |
Not applicable |
|
File size |
1,058 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Ia64_97a2dcb5bbc65adf17867bf194d9066b_31bf3856ad364e35_6.0.6001.22628_none_3b3c330f5a321af8.manifest |
|
File version |
Not applicable |
|
File size |
1,375 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Ia64_b2c9a33cdc1b3e0460faad51e04fcdbb_31bf3856ad364e35_6.0.6002.22332_none_a4039c1bdcc58781.manifest |
|
File version |
Not applicable |
|
File size |
694 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Ia64_ce0e2b767e498779da398e0cb4abd502_31bf3856ad364e35_6.0.6001.22628_none_22b62c93e9c2a361.manifest |
|
File version |
Not applicable |
|
File size |
698 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Ia64_f2f5ce5e402e9b6f072ce94fb3f5d1d1_31bf3856ad364e35_6.0.6002.22332_none_4654087f13e08b72.manifest |
|
File version |
Not applicable |
|
File size |
1,038 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Ia64_microsoft-windows-http-api_31bf3856ad364e35_6.0.6001.22628_none_f629e9b6b67076f6.manifest |
|
File version |
Not applicable |
|
File size |
4,715 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
12:29 |
|
File name |
Ia64_microsoft-windows-http-api_31bf3856ad364e35_6.0.6002.22332_none_f7ff89f6b3a45001.manifest |
|
File version |
Not applicable |
|
File size |
4,715 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
15:36 |
|
File name |
Ia64_microsoft-windows-http_31bf3856ad364e35_6.0.6001.22628_none_ad3ea90031ff8a3b.manifest |
|
File version |
Not applicable |
|
File size |
144,558 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
12:31 |
|
File name |
Ia64_microsoft-windows-http_31bf3856ad364e35_6.0.6002.22332_none_af1449402f336346.manifest |
|
File version |
Not applicable |
|
File size |
144,957 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
15:38 |
|
File name |
Ia64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.0.6001.22628_none_d027b4de42695a40.manifest |
|
File version |
Not applicable |
|
File size |
16,254 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
12:28 |
|
File name |
Ia64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.0.6002.22332_none_d1fd551e3f9d334b.manifest |
|
File version |
Not applicable |
|
File size |
16,254 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
15:34 |
|
File name |
Update.mum |
|
File version |
Not applicable |
|
File size |
3,531 |
|
Date (UTC) |
10-Feb-2010 |
|
Time (UTC) |
14:57 |
|
File name |
Wow64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.0.6001.22628_none_369956be2f298475.manifest |
|
File version |
Not applicable |
|
File size |
9,710 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
16:30 |
|
File name |
Wow64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.0.6002.22332_none_386ef6fe2c5d5d80.manifest |
|
File version |
Not applicable |
|
File size |
9,710 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
18:12 |
|
File name |
X86_microsoft-windows-http-api_31bf3856ad364e35_6.0.6001.22628_none_f62845c0b6726dfa.manifest |
|
File version |
Not applicable |
|
File size |
4,708 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
16:40 |
|
File name |
X86_microsoft-windows-http-api_31bf3856ad364e35_6.0.6002.22332_none_f7fde600b3a64705.manifest |
|
File version |
Not applicable |
|
File size |
4,708 |
|
Date (UTC) |
09-Feb-2010 |
|
Time (UTC) |
18:19 |
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 |
2,028 |
|
Date (UTC) |
22-Feb-2011 |
|
Time (UTC) |
09:00 |
|
Platform |
Not Applicable |
|
File name |
X86_edd911999d3a58cd4fe66c9108a0f16a_31bf3856ad364e35_6.1.7600.20906_none_a008b149515ddda0.manifest |
|
File version |
Not Applicable |
|
File size |
705 |
|
Date (UTC) |
22-Feb-2011 |
|
Time (UTC) |
09:00 |
|
Platform |
Not Applicable |
|
File name |
X86_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7600.20906_none_d061843da3741dea.manifest |
|
File version |
Not Applicable |
|
File size |
10,228 |
|
Date (UTC) |
22-Feb-2011 |
|
Time (UTC) |
06:20 |
|
Platform |
Not Applicable |
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
|
File name |
Amd64_76f81776398d564a65bb41fb6b193cec_31bf3856ad364e35_6.1.7600.20906_none_fd99d41520704742.manifest |
|
File version |
Not Applicable |
|
File size |
1,060 |
|
Date (UTC) |
22-Feb-2011 |
|
Time (UTC) |
09:00 |
|
Platform |
Not Applicable |
|
File name |
Amd64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7600.20906_none_2c801fc15bd18f20.manifest |
|
File version |
Not Applicable |
|
File size |
10,236 |
|
Date (UTC) |
22-Feb-2011 |
|
Time (UTC) |
07:23 |
|
Platform |
Not Applicable |
|
File name |
Update.mum |
|
File version |
Not Applicable |
|
File size |
2,250 |
|
Date (UTC) |
22-Feb-2011 |
|
Time (UTC) |
09:00 |
|
Platform |
Not Applicable |
|
File name |
Wow64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7600.20906_none_36d4ca139032511b.manifest |
|
File version |
Not Applicable |
|
File size |
7,906 |
|
Date (UTC) |
22-Feb-2011 |
|
Time (UTC) |
06:16 |
|
Platform |
Not Applicable |
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
|
File name |
Ia64_f0b8867bf93be2340ee528e22049d207_31bf3856ad364e35_6.1.7600.20906_none_b1d35ec39409ad99.manifest |
|
File version |
Not Applicable |
|
File size |
1,058 |
|
Date (UTC) |
22-Feb-2011 |
|
Time (UTC) |
09:00 |
|
Platform |
Not Applicable |
|
File name |
Ia64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7600.20906_none_d0632833a37226e6.manifest |
|
File version |
Not Applicable |
|
File size |
10,232 |
|
Date (UTC) |
22-Feb-2011 |
|
Time (UTC) |
07:16 |
|
Platform |
Not Applicable |
|
File name |
Update.mum |
|
File version |
Not Applicable |
|
File size |
1,862 |
|
Date (UTC) |
22-Feb-2011 |
|
Time (UTC) |
09:00 |
|
Platform |
Not Applicable |
|
File name |
Wow64_microsoft-windows-iis-corewebengine_31bf3856ad364e35_6.1.7600.20906_none_36d4ca139032511b.manifest |
|
File version |
Not Applicable |
|
File size |
7,906 |
|
Date (UTC) |
22-Feb-2011 |
|
Time (UTC) |
06:16 |
|
Platform |
Not Applicable |
