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Microsoft, SBS 2011, Service Pack 1, Service Pack 1, Service Pack 1, Service Pack 1, Small Business Server 2011, Windows, Windows 7, Windows Server 2008 R2

Usbport.sys – Pre Service Pack 2 Revision History for Windows 7 SP1, Windows Server 2008 R2 SP1 and Windows Small Business Server 2011 (SBS 2011)

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Usbport.sys – Pre Service Pack 2 Revision History for Windows 7 SP1, Windows Server 2008 R2 SP1 and Windows Small Business Server 2011 (SBS 2011)

04-Sep-2013 – 6.1.7601.22441 – Usbport.sys – x86/x64 – http://support.microsoft.com/kb/2862330 – MS13-081: Description of the security update for USB drivers: October 8, 2013

04-Sep-2013 – 6.1.7601.18251 – Usbport.sys – x86/x64 – http://support.microsoft.com/kb/2862330 – MS13-081: Description of the security update for USB drivers: October 8, 2013

11-Jan-2013 – 6.1.7601.22215 – Usbport.sys – x86/x64 – http://support.microsoft.com/kb/2798670 – USB audio stream stalls on a computer that is running Windows 7 or Windows Server 2008 R2

08-Aug-2012 – 6.1.7601.22081 – Usbport.sys – x86/x64 – http://support.microsoft.com/kb/2742516 – “Device has not been installed correctly” or “Device unplugged” error message when you connect a USB hub to a computer that is running Windows 7 or Windows Server 2008 R2

08-Aug-2012 – 6.1.7601.17924 – Usbport.sys – x86/x64 – http://support.microsoft.com/kb/2742516 – “Device has not been installed correctly” or “Device unplugged” error message when you connect a USB hub to a computer that is running Windows 7 or Windows Server 2008 R2

07-Mar-2012 – 6.1.7601.21937 – Usbport.sys – x86/x64 – http://support.microsoft.com/kb/2683549 – USB composite devices do not enter selective suspend mode after you resume a Windows 7 or Windows Server 2008 R2-based computer from sleep

07-Mar-2012 – 6.1.7601.17791 – Usbport.sys – x86/x64 – http://support.microsoft.com/kb/2683549 – USB composite devices do not enter selective suspend mode after you resume a Windows 7 or Windows Server 2008 R2-based computer from sleep

05-Nov-2011 – 6.1.7601.21855 – Usbport.sys – x86/x64 – http://support.microsoft.com/kb/2621491 – USB hub stops working in Windows 7 if you click the mouse while the computer is entering sleep

05-Nov-2011 – 6.1.7601.17720 – Usbport.sys – x86/x64 – http://support.microsoft.com/kb/2621491 – USB hub stops working in Windows 7 if you click the mouse while the computer is entering sleep

21-Sep-2011 – 6.1.7601.21824 – Usbport.sys – x86/x64 – http://support.microsoft.com/kb/2528984 – Functionality issues on USB devices that are connected to a Windows 7-based computer that has an Intel platform

17-Sep-2011 – 6.1.7601.17695 – Usbport.sys – x86/x64 – http://support.microsoft.com/kb/2528984 – Functionality issues on USB devices that are connected to a Windows 7-based computer that has an Intel platform

25-Mar-2011 – 6.1.7601.21692 – Usbport.sys – x86/x64 – http://support.microsoft.com/kb/2529073 – Binary files in some USB drivers are not updated after you install Windows 7 SP1 or Windows Server 2008 R2 SP1

25-Mar-2011 – 6.1.7601.17586 – Usbport.sys – x86/x64 – http://support.microsoft.com/kb/2529073 – Binary files in some USB drivers are not updated after you install Windows 7 SP1 or Windows Server 2008 R2 SP1

Intel, Logitech, Microsoft, Nvidia, SBS 2008, SBS 2011, Small Business Server 2008, Small Business Server 2011, Windows, Windows 7, Windows Server 2008, Windows Server 2008 R2, Windows Vista

Windows Vista and Windows 7 – USB Audio Device or USB Headset can cause High CPU Usage and you may notice skipping in the sound playback

If you use a USB Headset, USB Speakers or USB Sound Card under Windows Vista or Windows 7 you may notice that the CPU Usage is very high when you are listening to sound, music or gaming.  You may also notice that the audio lags or skips as a result, this will normally occur every 10-20 seconds and may get worse over an extended period of time.

This is most likely to occur when the device is connected to a USB 2.0 EHCI (Enhanced Host Controller Interface)

The issue is caused by a problem with the usbport.sys driver that is part of Windows

The issue can be addressed in Windows 7 or Windows Server 2008 R2 by upgrading to “Service Pack 1”

The issue can be addressed in Windows Vista – Service Pack 2 or Windows Server 2008 – Service Pack 2 by applying the hotfix from http://support.microsoft.com/kb/981214 which includes an updated version of usbport.sys