A Web Services for Devices (WSD)-based scanner does not work after the device is restarted on a computer that is running in Windows 7 or Windows Server 2008 R2

Symptoms

Consider the following scenario:
  • You have a computer that is running Windows 7 or Windows Server 2008 R2.
  • You install a multifunction printer device that supports Web Services for Devices (WSD)-based scanning on the computer.
  • The multifunction printer device is restarted.
In this scenario, the device does not work properly.  

Cause

This issue occurs because the Wsdapi.dll module has incorrect subscription ending logic. Therefore, the Windows Image Acquisition (WIA) service enters a bad state, and future subscriptions are not handled correctly.

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: Note 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 Server 2008 R2

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
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 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 R2 and for Windows 7" 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 nameFile versionFile sizeDateTimePlatform
Wsdapi.dll6.1.7600.20744458,24029-Jun-201004:56x86
Wsdapi.mofNot applicable2,34810-Jun-200921:48Not applicable
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Wsdapi.dll6.1.7600.20744585,21629-Jun-201005:37x64
Wsdapi.mofNot applicable2,34810-Jun-200921:10Not applicable
Wsdapi.dll6.1.7600.20744458,24029-Jun-201004:56x86
Wsdapi.mofNot applicable2,34810-Jun-200921:48Not applicable
For all supported IA-64-based versions of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Wsdapi.dll6.1.7600.207441,384,44829-Jun-201004:30IA-64
Wsdapi.mofNot applicable2,34810-Jun-200921:15Not applicable
Wsdapi.dll6.1.7600.20744458,24029-Jun-201004:56x86
Wsdapi.mofNot applicable2,34810-Jun-200921:48Not applicable

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 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

For more information about WSD, visit the following Microsoft website: 

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
File nameUpdate.mum
File versionNot applicable
File size1,665
Date (UTC)29-Jun-2010
Time (UTC)22:33
PlatformNot applicable
File nameX86_9b7a179b745e493a4e3046bcaef1c071_31bf3856ad364e35_6.1.7600.20744_none_557fc24b56243417.manifest
File versionNot applicable
File size676
Date (UTC)29-Jun-2010
Time (UTC)22:33
PlatformNot applicable
File nameX86_wsdapi_31bf3856ad364e35_6.1.7600.20744_none_bf3dc4d9c7a843b2.manifest
File versionNot applicable
File size6,533
Date (UTC)29-Jun-2010
Time (UTC)05:31
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameAmd64_61f9ddd76e0d166a7d79b6871a91ed9a_31bf3856ad364e35_6.1.7600.20744_none_448ee04a7cabba03.manifest
File versionNot applicable
File size680
Date (UTC)29-Jun-2010
Time (UTC)22:33
PlatformNot applicable
File nameAmd64_ba1bbf0586b218ad31df919fffba6921_31bf3856ad364e35_6.1.7600.20744_none_31373a1f2333c803.manifest
File versionNot applicable
File size1,002
Date (UTC)29-Jun-2010
Time (UTC)22:33
PlatformNot applicable
File nameAmd64_f92723f60fdc2a6764d8b1d8b328a5ed_31bf3856ad364e35_6.1.7600.20744_none_6e8cbb1a28072347.manifest
File versionNot applicable
File size680
Date (UTC)29-Jun-2010
Time (UTC)22:33
PlatformNot applicable
File nameAmd64_wsdapi_31bf3856ad364e35_6.1.7600.20744_none_1b5c605d8005b4e8.manifest
File versionNot applicable
File size6,539
Date (UTC)29-Jun-2010
Time (UTC)06:28
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,897
Date (UTC)29-Jun-2010
Time (UTC)22:33
PlatformNot applicable
File nameWow64_wsdapi_31bf3856ad364e35_6.1.7600.20744_none_25b10aafb46676e3.manifest
File versionNot applicable
File size5,884
Date (UTC)29-Jun-2010
Time (UTC)05:19
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File nameIa64_61f9ddd76e0d166a7d79b6871a91ed9a_31bf3856ad364e35_6.1.7600.20744_none_e871e8bcc44c51c9.manifest
File versionNot applicable
File size679
Date (UTC)29-Jun-2010
Time (UTC)22:33
PlatformNot applicable
File nameIa64_cf087c789492867dc303d67faba7ac51_31bf3856ad364e35_6.1.7600.20744_none_c9634f6b1000288a.manifest
File versionNot applicable
File size678
Date (UTC)29-Jun-2010
Time (UTC)22:33
PlatformNot applicable
File nameIa64_wsdapi_31bf3856ad364e35_6.1.7600.20744_none_bf3f68cfc7a64cae.manifest
File versionNot applicable
File size6,536
Date (UTC)29-Jun-2010
Time (UTC)06:22
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,690
Date (UTC)29-Jun-2010
Time (UTC)22:33
PlatformNot applicable
File nameWow64_wsdapi_31bf3856ad364e35_6.1.7600.20744_none_25b10aafb46676e3.manifest
File versionNot applicable
File size5,884
Date (UTC)29-Jun-2010
Time (UTC)05:19
PlatformNot applicable
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