Windows Vista still inherits some of problems and issues faced in Windows XP regarding USB components, such as unable to recognize or detect external or portable USB flash drive after inserted to computer. Microsoft releases an update KB941600 that intends to fix and solve errors and issues that happen when using USB device or function in Windows Vista, but it’s restricted with WGA genuine Windows validation check. Hence you will find the direct download links to the KB941600 update package here.
KB941600 hotfix is a cumulative update rollup that updates USB core components in Windows Vista to resolve some reliability issues related to USB ports. The issues that are fixed by the KB 941600 update include:
- Stop errors occur on a Windows-based computer that has 2GB or more of RAM and is using an NVIDIA nForce USB controller.
- You may experience problems after you resume a Windows Vista-based computer from sleep or from hibernation.
- Error message when you try to put a Windows Vista-based computer to sleep or into hibernation: “STOP 0x000000FE BUGCODE_USB_DRIVER”.
- After you use the Safely Remove Hardware option to remove a built-in optical drive from a portable Windows Vista-based computer, you may be unable to reconnect the drive.
- Error message in the Usbhub.sys process when you wake a Windows Vista-based computer from sleep or from hibernation: “STOP 0×00000044″.
- A USB device may no longer work correctly after Windows Vista resumes from sleep or from hibernation.
- Recording quality is poor when you use a USB microphone on a Windows Vista-based computer that has 4 GB of RAM or more.
- A USB composite device does not work after you disable and then enable the device in Device Manager on a computer that is running Windows Vista.
- When you connect a USB multifunction printer device to a Windows Vista-based computer, a second instance of the printer object is created, and the first instance no longer works.
- Error message on a Windows Vista-based computer that is running a USB composite device: “STOP 0x000000FE”.
- The Safely Remove Hardware feature and the Windows Explorer “Eject” command do not work correctly with an Apple iPod that is connected to a Windows Vista-based computer.
- A USB device takes a long time to resume from “selective suspend” mode on a Windows Vista-based computer that uses UHCI USB controllers.
- When you resume a Windows Vista-based computer from sleep, you may experience unexpected behavior from a USB device.
- When the computer resumes from a suspend state or from a hibernation state, the computer stops responding. Additionally, you receive a “0x9F” stop message on a blue screen.
- The computer takes a long time to resume from a suspend state or from a hibernation state.
- The computer takes a long time to resume from a suspend state or from a hibernation state when you use a VIA controller.
- The computer stops responding when you use an AuthenTec USB fingerprint reader. Additionally, you receive a “0xFE” Stop error on a blue screen or a “0x9F” Stop error on a blue screen.
- The computer stops responding when you use a USB Bluetooth audio device.
- The computer takes a long time to resume from a suspend state or from a hibernation state when you use an Enhanced Host Controller Interface (EHCI) controller.
- The computer stops responding when you remove a USB device. Additionally, you receive a “0xFE” Stop error on a blue screen.
- When a computer resumes from a suspend state or from a hibernation state multiple times, you receive a “0xFE” Stop error on a blue screen.
KB941600 updates is available in both x86 and x64 versions. Only 32-bit version requires to go through Windows Genuine Advantage Validation process. Users can directly download the setup installer using links below too.
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