"0x00000133" Stop may occur on systems with Intel processors that are running Windows 8.1 or Windows Server 2012 R2

Applies to: Windows Server 2012 R2 DatacenterWindows Server 2012 R2 StandardWindows Server 2012 R2 Essentials

This article describes a Stop error that occurs in Windows 8.1 or Windows Server 2012 R2. A hotfix is available to resolve this issue. The hotfix has a prerequisite and a restart requirement.


This issue may occur on systems with either Intel Atom, Celeron or Pentium processors that are running Windows 8.1 or Windows Server 2012 R2. The Stop error message resembles the following:

STOP: 0x00000133 (parameter1, parameter2, parameter3, parameter4)

  • This Stop error indicates a DPC_WATCHDOG_VIOLATION issue.
  • The parameters in this Stop error message vary, depending on the configuration of the computer.
  • Not all "0x00000133" Stop errors are caused by this issue.


This issue occurs because of a race condition in the Msgpioclx.sys file when the system is shutting down, hibernating, or rebooting. Specifically, the Msgpioclx.sys file does not wait for the threads that handle a general-purpose I/O (GPIO) interrupt pin to complete by a certain point.


To resolve this issue, we have released a hotfix for Windows 8.1 and Windows Server 2012 R2. Even though this issue has only been observed in Windows 8.1 or Windows Server 2012 R2, the hotfix also applies to Windows RT 8.1.

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.

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, submit a request to 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 website: 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.


To apply this hotfix, you must have April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows 8.1 or Windows Server 2012 R2.

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.


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


See the terminology that Microsoft uses to describe software updates.

Third-party information disclaimer
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.