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High CPU usage in Psxss.exe in Windows 7 or Windows Server 2008 R2

View products that this article applies to.

Symptoms

On a computer that is running Windows 7 or Windows Server 2008 R2, the Psxss.exe process frequently consumes 100 percent of the CPU's resources.

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Cause

This problem occurs because a local procedure call (LPC) live lock occurs in the kernel.

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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, go to the following Microsoft website:
http://support.microsoft.com/contactus/?ws=support
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 Service Pack 1 (SP1)
  • Windows Server 2008 R2 Service Pack 1 (SP1)

See Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2 for more information.

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 files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    VersionProductSR_LevelService branch
    6.1.760
    1.
    22xxx    		Windows 7 and Windows Server 2008 R2SP1LDR
  • 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 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 nameFile versionFile sizeDateTimePlatform
Appid-ppdlic.xrm-msNot applicable3,01306-May-201305:27Not applicable
Appid.sys6.1.7601.2231850,17606-May-201303:31x86
Appidapi.dll6.1.7601.2231850,68806-May-201305:01x86
Appidcertstorecheck.exe6.1.7601.2231816,89606-May-201303:30x86
Appidpolicyconverter.exe6.1.7601.2231897,79206-May-201303:31x86
Appidsvc.dll6.1.7601.2231829,69606-May-201303:30x86
Csrsrv.dll6.1.7601.2231838,91206-May-201305:02x86
Ntkrnlpa.exe6.1.7601.223183,972,96806-May-201305:10Not applicable
Ntoskrnl.exe6.1.7601.223183,917,16006-May-201305:10Not applicable
Apisetschema.dll6.1.7601.223186,65606-May-201305:01x86
Smss.exe6.1.7601.2231869,63206-May-201303:02x86
Apisetschema.dll6.1.7601.223186,65606-May-201305:01x86
Smss.exe6.1.7601.2231869,63206-May-201303:02x86
For all supported x64-based versions of Windows 7 and Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Appid-ppdlic.xrm-msNot applicable3,01306-May-201305:43Not applicable
Appid.sys6.1.7601.2231861,44006-May-201303:36x64
Appidapi.dll6.1.7601.2231858,36806-May-201305:17x64
Appidcertstorecheck.exe6.1.7601.2231817,92006-May-201303:36x64
Appidpolicyconverter.exe6.1.7601.22318148,48006-May-201303:37x64
Appidsvc.dll6.1.7601.2231834,30406-May-201305:17x64
Csrsrv.dll6.1.7601.2231843,52006-May-201305:17x64
Ntoskrnl.exe6.1.7601.223185,554,02406-May-201305:26x64
Apisetschema.dll6.1.7601.223186,65606-May-201305:17x64
Smss.exe6.1.7601.22318112,64006-May-201302:56x64
Apisetschema.dll6.1.7601.223186,65606-May-201305:17x64
Smss.exe6.1.7601.22318112,64006-May-201302:56x64
For all supported IA-64-based versions of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Appid-ppdlic.xrm-msNot applicable3,01306-May-201304:46Not applicable
Appid.sys6.1.7601.22318131,07206-May-201303:07IA-64
Appidapi.dll6.1.7601.22318116,73606-May-201304:22IA-64
Appidcertstorecheck.exe6.1.7601.2231839,42406-May-201303:07IA-64
Appidpolicyconverter.exe6.1.7601.22318282,62406-May-201303:07IA-64
Appidsvc.dll6.1.7601.2231874,24006-May-201304:22IA-64
Csrsrv.dll6.1.7601.2231894,72006-May-201304:23IA-64
Ntoskrnl.exe6.1.7601.2231811,125,60806-May-201304:32IA-64
Apisetschema.dll6.1.7601.223186,65606-May-201304:22IA-64
Smss.exe6.1.7601.22318207,87206-May-201302:25IA-64

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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Additional file information

Additional file information for Windows 7 and Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
File nameX86_microsoft-windows-appid_31bf3856ad364e35_6.1.7601.22318_none_59e0fbb029838c63.manifest
File versionNot applicable
File size15,313
Date (UTC)06-May-2013
Time (UTC)05:35
PlatformNot applicable
File nameX86_microsoft-windows-csrsrv_31bf3856ad364e35_6.1.7601.22318_none_cc1c226a1cb9e226.manifest
File versionNot applicable
File size2,513
Date (UTC)06-May-2013
Time (UTC)05:42
PlatformNot applicable
File nameX86_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7601.22318_none_6ec54d052b7f52c5.manifest
File versionNot applicable
File size16,151
Date (UTC)06-May-2013
Time (UTC)05:43
PlatformNot applicable
File nameX86_microsoft-windows-smss_31bf3856ad364e35_6.1.7601.22318_none_aecf9361908de017.manifest
File versionNot applicable
File size26,386
Date (UTC)06-May-2013
Time (UTC)05:43
PlatformNot applicable
File nameX86_microsoft-windows-smss_31bf3856ad364e35_7.1.7601.22318_none_a0400fa71b7488e6.manifest
File versionNot applicable
File size26,420
Date (UTC)06-May-2013
Time (UTC)05:40
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 7 and Windows Server 2008 R2
File nameAmd64_microsoft-windows-appid_31bf3856ad364e35_6.1.7601.22318_none_b5ff9733e1e0fd99.manifest
File versionNot applicable
File size15,317
Date (UTC)06-May-2013
Time (UTC)05:52
PlatformNot applicable
File nameAmd64_microsoft-windows-csrsrv_31bf3856ad364e35_6.1.7601.22318_none_283abdedd517535c.manifest
File versionNot applicable
File size2,515
Date (UTC)06-May-2013
Time (UTC)05:56
PlatformNot applicable
File nameAmd64_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7601.22318_none_cae3e888e3dcc3fb.manifest
File versionNot applicable
File size15,291
Date (UTC)06-May-2013
Time (UTC)05:58
PlatformNot applicable
File nameAmd64_microsoft-windows-smss_31bf3856ad364e35_6.1.7601.22318_none_0aee2ee548eb514d.manifest
File versionNot applicable
File size26,679
Date (UTC)06-May-2013
Time (UTC)05:57
PlatformNot applicable
File nameAmd64_microsoft-windows-smss_31bf3856ad364e35_7.1.7601.22318_none_fc5eab2ad3d1fa1c.manifest
File versionNot applicable
File size26,713
Date (UTC)06-May-2013
Time (UTC)05:52
PlatformNot applicable
File nameWow64_microsoft-windows-appid_31bf3856ad364e35_6.1.7601.22318_none_c05441861641bf94.manifest
File versionNot applicable
File size3,356
Date (UTC)06-May-2013
Time (UTC)05:19
PlatformNot applicable
File nameWow64_microsoft-windows-csrsrv_31bf3856ad364e35_6.1.7601.22318_none_328f684009781557.manifest
File versionNot applicable
File size1,136
Date (UTC)06-May-2013
Time (UTC)05:19
PlatformNot applicable
File nameWow64_microsoft-windows-smss_31bf3856ad364e35_6.1.7601.22318_none_1542d9377d4c1348.manifest
File versionNot applicable
File size8,429
Date (UTC)06-May-2013
Time (UTC)05:20
PlatformNot applicable
File nameWow64_microsoft-windows-smss_31bf3856ad364e35_7.1.7601.22318_none_06b3557d0832bc17.manifest
File versionNot applicable
File size8,429
Date (UTC)06-May-2013
Time (UTC)05:20
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File nameIa64_microsoft-windows-appid_31bf3856ad364e35_6.1.7601.22318_none_59e29fa62981955f.manifest
File versionNot applicable
File size15,315
Date (UTC)06-May-2013
Time (UTC)05:24
PlatformNot applicable
File nameIa64_microsoft-windows-csrsrv_31bf3856ad364e35_6.1.7601.22318_none_cc1dc6601cb7eb22.manifest
File versionNot applicable
File size2,514
Date (UTC)06-May-2013
Time (UTC)05:27
PlatformNot applicable
File nameIa64_microsoft-windows-os-kernel_31bf3856ad364e35_6.1.7601.22318_none_6ec6f0fb2b7d5bc1.manifest
File versionNot applicable
File size15,289
Date (UTC)06-May-2013
Time (UTC)05:29
PlatformNot applicable
File nameIa64_microsoft-windows-smss_31bf3856ad364e35_6.1.7601.22318_none_aed13757908be913.manifest
File versionNot applicable
File size26,675
Date (UTC)06-May-2013
Time (UTC)05:28
PlatformNot applicable
File nameWow64_microsoft-windows-appid_31bf3856ad364e35_6.1.7601.22318_none_c05441861641bf94.manifest
File versionNot applicable
File size3,356
Date (UTC)06-May-2013
Time (UTC)05:19
PlatformNot applicable
File nameWow64_microsoft-windows-csrsrv_31bf3856ad364e35_6.1.7601.22318_none_328f684009781557.manifest
File versionNot applicable
File size1,136
Date (UTC)06-May-2013
Time (UTC)05:19
PlatformNot applicable
File nameWow64_microsoft-windows-smss_31bf3856ad364e35_6.1.7601.22318_none_1542d9377d4c1348.manifest
File versionNot applicable
File size8,429
Date (UTC)06-May-2013
Time (UTC)05:20
PlatformNot applicable

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Keywords: kb, kbautohotfix, kbqfe, kbhotfixserver, kbfix, kbexpertiseinter, kbsurveynew, kbbug

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Article Info
Article ID : 2840947
Revision : 1
Created on : 1/7/2017
Published on : 6/12/2013
Exists online : False
Views : 135