USB 3.0 hub is indefinitely powered on and then off after a device causes an overcurrent condition in Windows 8

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 Windows 8.

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 8 file information 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 8	RTM	GDR
  6.2.920 0.20 xxx	Windows 8	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" 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 (UTC)	Time (UTC)	Platform
Usbhub3.sys	6.2.9200.16728	362,840	2-Oct-13	0:38	x86
Usbhub3.sys	6.2.9200.20839	362,840	2-Oct-13	0:37	x86

For all supported x64-based versions of Windows 8

File name	File version	File size	Date (UTC)	Time (UTC)	Platform
Usbhub3.sys	6.2.9200.16728	447,320	2-Oct-13	2:50	x64
Usbhub3.sys	6.2.9200.20839	447,320	2-Oct-13	2:53	x64