Plug and Play Manager stops working when you wake a computer from sleep in Windows

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that 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, visit the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote 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.

PrerequisitesTo apply this hotfix, you must be running one of the following operating systems:

• Windows 7 SP1

• Windows Server 2008 R2 SP1

• Windows 8

• Windows Server 2012

Registry informationTo apply this hotfix, you do not have to make any changes to the registry.

Restart requirementYou may be prompted to restart the computer after you apply this hotfix.

Hotfix replacement informationThis hotfix does not replace a previously released hotfix.

File information

The global 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 RT, Windows 8, and Windows Server 2012 file information

Important Windows 8 and Windows Server 2012 hotfixes are included in the same packages.

Notes

• 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 RT, Windows 8, and Windows Server 2012	RTM	GDR
  6.2.920 0.20 xxx	Windows RT, Windows 8, and Windows Server 2012	RTM	LDR

For Windows RT

File name	File version	File size	Date	Time	Platform
Drmk.sys	6.2.9200.16720	90,112	21-Sep-2013	02:37	Not applicable
Drmkaud.sys	6.2.9200.16433	5,632	11-Oct-2012	04:30	Not applicable
Portcls.sys	6.2.9200.16723	194,560	24-Sep-2013	22:17	Not applicable
Sysfxui.dll	6.2.9200.16433	340,992	11-Oct-2012	04:50	Not applicable
Wmalfxgfxdsp.dll	6.2.9200.16433	1,144,968	11-Oct-2012	05:10	Not applicable

For all supported x86-based versions of Windows 8

File name	File version	File size	Date	Time	Platform
Drmk.sys	6.2.9200.16433	83,456	11-Oct-2012	04:39	x86
Drmkaud.sys	6.2.9200.16433	5,120	11-Oct-2012	04:40	x86
Portcls.sys	6.2.9200.16723	219,136	24-Sep-2013	22:19	x86
Sysfxui.dll	6.2.9200.16433	336,896	11-Oct-2012	05:07	x86
Wmalfxgfxdsp.dll	6.2.9200.16433	1,262,744	11-Oct-2012	05:18	x86
Drmk.sys	6.2.9200.20534	83,456	11-Oct-2012	04:44	x86
Drmkaud.sys	6.2.9200.20534	5,120	11-Oct-2012	04:44	x86
Portcls.sys	6.2.9200.20833	218,112	24-Sep-2013	22:19	x86
Sysfxui.dll	6.2.9200.20534	336,896	11-Oct-2012	05:12	x86
Wmalfxgfxdsp.dll	6.2.9200.20534	1,262,744	11-Oct-2012	05:43	x86

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

File name	File version	File size	Date	Time	Platform
Drmk.sys	6.2.9200.16433	111,616	11-Oct-2012	05:18	x64
Drmkaud.sys	6.2.9200.16433	5,632	11-Oct-2012	05:19	x64
Portcls.sys	6.2.9200.16723	288,768	24-Sep-2013	22:18	x64
Sysfxui.dll	6.2.9200.16433	370,176	11-Oct-2012	05:45	x64
Wmalfxgfxdsp.dll	6.2.9200.16433	1,636,672	11-Oct-2012	07:02	x64
Drmk.sys	6.2.9200.20534	111,616	11-Oct-2012	05:17	x64
Drmkaud.sys	6.2.9200.20534	5,632	11-Oct-2012	05:17	x64
Portcls.sys	6.2.9200.20833	285,696	24-Sep-2013	22:18	x64
Sysfxui.dll	6.2.9200.20534	370,176	11-Oct-2012	05:44	x64
Wmalfxgfxdsp.dll	6.2.9200.20534	1,636,672	11-Oct-2012	07:11	x64

Windows 7 and Windows Server 2008 R2 file information

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.

Notes

• 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
  6.1.760 1.18xxx	Windows 7 and Windows Server 2008 R2	SP1	GDR
  6.1.760 1.22xxx	Windows 7 and Windows Server 2008 R2	SP1	LDR

• GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

For all supported x86-based versions of Windows 7

File name	File version	File size	Date	Time	Platform
Drmk.sys	6.1.7601.18270	81,408	25-Sep-2013	01:48	x86
Portcls.sys	6.1.7601.18270	177,152	25-Sep-2013	01:15	x86
Drmk.sys	6.1.7601.22465	81,408	25-Sep-2013	01:52	x86
Portcls.sys	6.1.7601.22465	177,152	25-Sep-2013	01:19	x86

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name	File version	File size	Date	Time	Platform
Drmk.sys	6.1.7601.18270	116,736	25-Sep-2013	02:11	x64
Portcls.sys	6.1.7601.18270	230,400	25-Sep-2013	01:32	x64
Drmk.sys	6.1.7601.22465	116,736	25-Sep-2013	02:15	x64
Portcls.sys	6.1.7601.22465	230,400	25-Sep-2013	01:36	x64

For all supported IA-64-based versions of Windows Server 2008 R2

File name	File version	File size	Date	Time	Platform
Portcls.sys	6.1.7601.18270	605,696	25-Sep-2013	01:00	IA-64
Portcls.sys	6.1.7601.22465	605,696	25-Sep-2013	01:02	IA-64