Error message when you try to shut down Windows Vista: "The instruction at 0x77f05148 referenced memory at 0x96ac3ce4. The memory could not be written"

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When you try to shut down a Windows Vista-based computer, you may receive an error message that resembles the following:
The instruction at 0x77f05148 referenced memory at 0x96ac3ce4. The memory could not be written.
When this problem occurs, the computer does not shut down as expected. This problem may occur only intermittently.

Service pack information

To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack

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 this specific problem. 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.


No prerequisites are required.

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 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, x86-based versions
File nameFile versionFile sizeDateTimePlatform
Ntkrnlpa.exe6.0.6000.206193,504,31214-Jun-200702:21Not applicable
Ntoskrnl.exe6.0.6000.206193,470,52014-Jun-200702:21Not applicable
Update.mumNot applicable1,99614-Jun-200713:04Not applicable
X86_96cbc0a459e7edda688c3b592c065f2e_31bf3856ad364e35_6.0.6000.20619_none_6ddb2605fbe0155a.manifestNot applicable69714-Jun-200713:04Not applicable
X86_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6000.20619_none_6ad1f08dd01a241a.manifestNot applicable18,77814-Jun-200713:05Not applicable
Windows Vista, 64-bit versions
File nameFile versionFile sizeDateTimePlatform
Amd64_1a9a3b8bc3ea1a1cddbd3beafde3b531_31bf3856ad364e35_6.0.6000.20619_none_62dfc42583d19940.manifestNot applicable70114-Jun-200713:04Not applicable
Amd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.0.6000.20619_none_c6f08c1188779550.manifestNot applicable17,33014-Jun-200713:12Not applicable
Update.mumNot applicable1,99614-Jun-200713:04Not applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1.
More information
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684Description of the standard terminology that is used to describe Microsoft software updates

Article ID: 937381 - Last Review: 01/16/2015 17:17:14 - Revision: 5.0

  • Windows Vista Home Basic 64-bit Edition
  • Windows Vista Home Premium 64-bit Edition
  • Windows Vista Business 64-bit Edition
  • Windows Vista Enterprise 64-bit Edition
  • Windows Vista Ultimate 64-bit Edition
  • Windows Vista Starter
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