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You encounter slow performance when you render .jpg files on a computer that is running an x64-based version of Windows Server 2008 or of Windows Vista

You notice slow performance when you render a .jpg file on a computer that is running an x64-based version of Windows Server 2008 or of Windows Vista. Additionally, the performance is slower than when you render the same .jpg file on a computer that is running an x86-based version of Windows Server 2008 or of Windows Vista.
This problem occurs because the image scaling process in Windows Server 2008 and in Windows Vista is not well optimized for the 64-bit processor architectures.
To resolve the issue, install hot fix 970987 on the affected computers that are running the x64-based versions of Windows Server 2008 or Windows Vista.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problemP1 that P2 described in this article. Apply this hotfix only to systems that are experiencing the problemP1 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.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.


To apply this hotfix, your computer must be running one of the following operating systems:
  • Windows Server 2008
  • Windows Server 2008 Service Pack 2 (SP2)
  • Windows Vista Service Pack 1 (SP1)
  • Windows Vista Service Pack 2 (SP2)

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released 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. The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately. 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 (attributes not listed) are signed with a Microsoft digital signature.
For all supported x64-based versions of Windows Server 2008 and of Windows Vista SP1
File nameFile versionFile sizeDateTimePlatform
For all supported x64-based versions of Windows Server 2008 SP2 and of Windows Vista SP2
File nameFile versionFile sizeDateTimePlatform
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information, 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 Windows Server 2008 and for Windows Vista

Additional files for all supported x64-based versions of Windows Server 2008 and of Windows Vista

File nameFile versionFile sizeDateTimePlatform
Amd64_microsoft-windows-windowscodec_31bf3856ad364e35_6.0.6001.22426_none_f31a575f72a3f65c.manifestNot Applicable548,43806-May-200916:34Not Applicable
Amd64_microsoft-windows-windowscodec_31bf3856ad364e35_6.0.6002.22129_none_f503ca256fc79785.manifestNot Applicable548,43806-May-200915:20Not Applicable
Package_for_kb970987_client_1~31bf3856ad364e35~amd64~~ Applicable1,37507-May-200908:31Not Applicable
Package_for_kb970987_client_2~31bf3856ad364e35~amd64~~ Applicable1,98207-May-200908:31Not Applicable
Package_for_kb970987_client~31bf3856ad364e35~amd64~~ Applicable1,72307-May-200908:31Not Applicable
Package_for_kb970987_sc_0~31bf3856ad364e35~amd64~~ Applicable1,42907-May-200908:31Not Applicable
Package_for_kb970987_sc_1~31bf3856ad364e35~amd64~~ Applicable1,97907-May-200908:31Not Applicable
Package_for_kb970987_sc~31bf3856ad364e35~amd64~~ Applicable1,71107-May-200908:31Not Applicable
Package_for_kb970987_server_0~31bf3856ad364e35~amd64~~ Applicable1,43307-May-200908:31Not Applicable
Package_for_kb970987_server_1~31bf3856ad364e35~amd64~~ Applicable1,98307-May-200908:31Not Applicable
Package_for_kb970987_server~31bf3856ad364e35~amd64~~ Applicable1,72307-May-200908:31Not Applicable

Article ID: 970987 - Last Review: 10/07/2011 19:54:00 - Revision: 2.0

Windows Server 2008 Datacenter, Windows Server 2008 Enterprise, Windows Server 2008 Standard, Windows Server 2008 Datacenter without Hyper-V, Windows Server 2008 Enterprise without Hyper-V, Windows Server 2008 Standard without Hyper-V, Windows Vista Enterprise 64-bit Edition, Windows Vista Ultimate 64-bit Edition, Windows Vista Business 64-bit Edition

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