The W3wp.exe process has high CPU usage when you run PowerShell commands for Exchange

Applies To
Windows 8 Windows 8 Enterprise Windows 8.1 Pro Windows Server 2012 Datacenter Windows Server 2012 Datacenter Windows Server 2012 Foundation Windows Server 2012 Foundation Windows Server 2012 Standard Windows Server 2012 Standard

Symptoms

Consider the following scenario:

  • You are connected to an Exchange server that is based on a server that is running Windows Server 2012.
  • You run PowerShell commands for Exchange.

In this scenario, you may find that the W3wp.exe process has high CPU usage. This causes Exchange failures or significant decrease in performance issues.

Cause

This problem occurs because of a deadlock situation in Web Services for Management (WS-Management).

Resolution

Hotfix information

A supported hotfix is available from Microsoft Support. 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

There are no prerequisites for installing this hotfix.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any 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 8 and Windows Server 2012 file information and notesImportant Windows 8 and Windows Server 2012 hotfixes are included in the same packages. However, only "Windows 8" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 8" 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, milestone (RTM,SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version Product Milestone Service branch
    6.2.920 0.16 xxx Windows 8 and Windows Server 2012 RTM GDR
    6.2.920 0.21 xxx Windows 8 and Windows Server 2012 RTM LDR
  • 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 8 and Windows Server 2012" 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 8

File name File version File size Date Time Platform
Winrm.cmd Not applicable 35 02-Jun-2012 14:34 Not applicable
Winrm.vbs Not applicable 204,105 02-Jun-2012 14:34 Not applicable
Wsmagent.dll 6.2.9200.16384 24,064 26-Jul-2012 03:20 x86
Wsmagent.mof Not applicable 822 02-Jun-2012 14:34 Not applicable
Wsmagentuninstall.mof Not applicable 754 02-Jun-2012 14:34 Not applicable
Wsmanconfig_schema.xml Not applicable 4,675 02-Jun-2012 14:34 Not applicable
Wsmanhttpconfig.exe 6.2.9200.16384 30,208 26-Jul-2012 03:21 x86
Wsmanmigrationplugin.dll 6.2.9200.16384 56,832 26-Jul-2012 03:20 x86
Wsmauto.dll 6.2.9200.16384 138,240 26-Jul-2012 03:20 x86
Wsmauto.mof Not applicable 4,430 02-Jun-2012 14:34 Not applicable
Wsmplpxy.dll 6.2.9200.16384 10,752 26-Jul-2012 03:20 x86
Wsmprovhost.exe 6.2.9200.16384 35,840 26-Jul-2012 03:21 x86
Wsmpty.xsl Not applicable 1,559 02-Jun-2012 14:34 Not applicable
Wsmres.dll 6.2.9200.16384 60,416 26-Jul-2012 02:44 x86
Wsmsvc.dll 6.2.9200.21178 2,044,416 16-Jul-2014 22:34 x86
Wsmtxt.xsl Not applicable 2,426 02-Jun-2012 14:34 Not applicable
Wsmwmipl.dll 6.2.9200.21178 227,328 16-Jul-2014 22:34 x86

For all supported x64-based versions of Windows 8 and Windows Server 2012

File name File version File size Date Time Platform
Winrm.cmd Not applicable 35 02-Jun-2012 14:34 Not applicable
Winrm.vbs Not applicable 204,105 02-Jun-2012 14:34 Not applicable
Wsmagent.dll 6.2.9200.16384 29,696 26-Jul-2012 03:08 x64
Wsmagent.mof Not applicable 822 02-Jun-2012 14:34 Not applicable
Wsmagentuninstall.mof Not applicable 754 02-Jun-2012 14:34 Not applicable
Wsmanconfig_schema.xml Not applicable 4,675 02-Jun-2012 14:34 Not applicable
Wsmanhttpconfig.exe 6.2.9200.16384 28,672 26-Jul-2012 03:08 x64
Wsmanmigrationplugin.dll 6.2.9200.16384 66,560 26-Jul-2012 03:08 x64
Wsmauto.dll 6.2.9200.16384 156,672 26-Jul-2012 03:08 x64
Wsmauto.mof Not applicable 4,430 02-Jun-2012 14:34 Not applicable
Wsmplpxy.dll 6.2.9200.16384 14,336 26-Jul-2012 03:08 x64
Wsmprovhost.exe 6.2.9200.16384 30,720 26-Jul-2012 03:08 x64
Wsmpty.xsl Not applicable 1,559 02-Jun-2012 14:34 Not applicable
Wsmres.dll 6.2.9200.16384 60,416 26-Jul-2012 02:34 x64
Wsmsvc.dll 6.2.9200.21178 2,838,016 16-Jul-2014 22:30 x64
Wsmtxt.xsl Not applicable 2,426 02-Jun-2012 14:34 Not applicable
Wsmwmipl.dll 6.2.9200.21178 309,248 16-Jul-2014 22:30 x64
Winrm.cmd Not applicable 35 02-Jun-2012 14:34 Not applicable
Winrm.vbs Not applicable 204,105 02-Jun-2012 14:34 Not applicable
Wsmagent.dll 6.2.9200.16384 24,064 26-Jul-2012 03:20 x86
Wsmagent.mof Not applicable 822 02-Jun-2012 14:34 Not applicable
Wsmagentuninstall.mof Not applicable 754 02-Jun-2012 14:34 Not applicable
Wsmanconfig_schema.xml Not applicable 4,675 02-Jun-2012 14:34 Not applicable
Wsmanhttpconfig.exe 6.2.9200.16384 30,208 26-Jul-2012 03:21 x86
Wsmanmigrationplugin.dll 6.2.9200.16384 56,832 26-Jul-2012 03:20 x86
Wsmauto.dll 6.2.9200.16384 138,240 26-Jul-2012 03:20 x86
Wsmauto.mof Not applicable 4,430 02-Jun-2012 14:34 Not applicable
Wsmplpxy.dll 6.2.9200.16384 10,752 26-Jul-2012 03:20 x86
Wsmprovhost.exe 6.2.9200.16384 35,840 26-Jul-2012 03:21 x86
Wsmpty.xsl Not applicable 1,559 02-Jun-2012 14:34 Not applicable
Wsmres.dll 6.2.9200.16384 60,416 26-Jul-2012 02:44 x86
Wsmsvc.dll 6.2.9200.21178 2,044,416 16-Jul-2014 22:34 x86
Wsmtxt.xsl Not applicable 2,426 02-Jun-2012 14:34 Not applicable
Wsmwmipl.dll 6.2.9200.21178 227,328 16-Jul-2014 22:34 x86

Additional file information for Windows 8 and Windows Server 2012

Additional files for all supported x86-based versions of Windows 8

File name X86_46db4c051e95a6ff3e06141a3ac6599a_31bf3856ad364e35_6.2.9200.21179_none_07f549bf9ea1a863.manifest
File version Not applicable
File size 720
Date (UTC) 23-Jul-2014
Time (UTC) 21:17
Platform Not applicable
File name X86_microsoft-windows-w..for-management-core_31bf3856ad364e35_6.2.9200.21179_none_c7a9d2ef977fb5ce.manifest
File version Not applicable
File size 195,191
Date (UTC) 23-Jul-2014
Time (UTC) 21:17
Platform Not applicable

Additional files for all supported x64-based versions of Windows 8 and Windows Server 2012

File name Amd64_59a9d5b9c9fc36407add8645968bdf83_31bf3856ad364e35_6.2.9200.21179_none_76f95a9c203aa30d.manifest
File version Not applicable
File size 1,090
Date (UTC) 23-Jul-2014
Time (UTC) 21:20
Platform Not applicable
File name Amd64_microsoft-windows-w..for-management-core_31bf3856ad364e35_6.2.9200.21179_none_23c86e734fdd2704.manifest
File version Not applicable
File size 195,199
Date (UTC) 23-Jul-2014
Time (UTC) 21:20
Platform Not applicable
File name Wow64_microsoft-windows-w..for-management-core_31bf3856ad364e35_6.2.9200.21179_none_2e1d18c5843de8ff.manifest
File version Not applicable
File size 191,314
Date (UTC) 23-Jul-2014
Time (UTC) 21:20
Platform Not applicable

      

Status

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

References

Learn about the terminology that Microsoft uses to describe software updates.