如果您将外部USB设备连接到Windows 10并收到一条错误消息，指出“ USB无法识别。设备描述符请求(Device Descriptor Request)失败”，那么您来对地方了，今天我们将看到如何(How)解决此错误。主要问题是由于此错误消息，您将无法访问您的USB设备。(USB)如果您单击错误通知或进入设备管理器，然后右键单击故障设备并选择属性(Properties)，您将看到错误消息“您连接到此计算机的最后一个USB设备发生故障， (USB)Windows无法识别它。”
这里要注意的另一件事是，发生故障的设备将被标记为“未知 USB 设备(Unknown USB Device)（设备描述符请求(Device Descriptor Request)失败）”，并带有一个黄色三角形，这将确认您的设备无法正常工作或USB未被识别，因为它被标记为未知的 USB 设备(Unknown USB Device)。因此，不要浪费任何时间，让我们在下面列出的教程的帮助下查看如何修复未知的 USB 设备(Fix Unkown USB Device)（设备描述符请求失败）。(Device Descriptor Request)
什么是设备(Device)描述符请求失败错误(Error)？
USB设备描述符负责存储与各种USB设备相关的信息，并在将来连接到系统时识别这些USB设备。(USB)如果无法识别USB，则USB设备描述符在(USB)Windows 10上无法正常工作，因此您将面临设备描述符请求(Device Descriptor Request)失败错误。根据您的系统配置，您可能会遇到以下错误消息之一：
USB device not recognized. The last USB device you connected to this computer malfunctioned, and Windows does not recognized.
One of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it.
Try reconnecting the device. If Windows still does not recognize it, your device may not be working properly.
Unknown USB device (device descriptor request failed) code 43
USB\DEVICE_DESCRIPTOR_FAILURE
设备描述符请求(Device Descriptor Request)失败错误的原因
- 过时、损坏或不兼容的USB设备驱动程序
- 病毒(Virus)或恶意软件已损坏您的系统。
- USB端口出现故障或无法正常工作
- BIOS未更新，这可能会导致此问题
- USB 设备可能已损坏
- Windows 找不到您可能正在使用的USB设备的描述(USB)
修复设备描述符请求(Fix Device Descriptor Request)失败（未知 USB 设备(Unkown USB Device)）
确保 创建一个还原点(create a restore point) 以防万一出现问题。
方法 1：更改USB 选择性暂停设置(USB Selective Suspend Settings)
1. 右键单击任务栏上的电池图标，(battery icon on Taskbar)然后选择电源选项。(Power Options.)
2. 在您当前活动的电源计划(Power Plan)旁边，单击更改计划设置。(Change plan settings.)
3. 现在单击更改高级电源设置。(Change advanced power settings.)
4. 找到USB 设置(USB settings)，然后单击 Plus (+) icon将其展开。
5. 再次展开USB 选择性暂停设置(USB selective suspend settings)，并确保为“On Battery”和“Pluged in”选择Disabled 。
6. 单击应用，然后单击确定( OK)并重新( Rebooted)启动您的 PC 以保存更改。
方法 2：使用硬件(Hardware)和设备(Devices)疑难解答
1. 按Windows key + R然后键入 Control 并按 Enter 打开控制面板(Control Panel)。
2.现在在控制面板搜索(Control Panel Search)框中输入疑难解答(troubleshooter)并选择疑难解答。(Troubleshooting.)
4. 之后，单击硬件和声音(Hardware and Sound)下的配置设备链接 (Configure a device link )，然后按照屏幕上的说明进行操作。
5. 如果发现问题，请单击应用此修复程序。(Apply this fix.)
查看您是否能够 修复设备描述符请求失败（未知 USB 设备）(Fix Device Descriptor Request Failed (Unkown USB Device))，如果不能，则继续。
方法 3：卸载未知的 USB 驱动程序(Unknown USB Drivers)
1. 按Windows key + R 然后键入 devmgmt.msc 并按 Enter 打开设备管理器。(Device Manager.)
2. 在设备管理器中扩展通用串行总线控制器。(Universal Serial Bus controllers.)
4. 连接您的设备，Windows无法识别该设备。
5. 您将在通用串行总线控制器(Universal Serial Bus controllers.)下看到一个带有黄色感叹号 的未知 USB 设备（设备描述符请求失败） 。( Unknown USB device (Device Descriptor Request Failed))
6. 现在右键单击它并选择卸载。( Uninstall.)
注意：对(Note:)通用串行总线控制器 (Universal Serial Bus controllers )下带有黄色感叹号的所有设备执行此 操作。
7.重新启动您的电脑，(Restart your PC,)驱动程序将自动安装。
方法 4：禁用快速启动
1. 按 Windows 键 + R 然后键入control并按 Enter 打开控制面板。(Control Panel.)
2. 点击硬件和声音，(Hardware and Sound)然后点击电源选项(Power Options)。
3. 然后，从左侧窗格中选择“选择电源按钮的功能”。( “Choose what the power buttons do.”)
4. 现在点击“更改当前不可用的设置”。(“Change settings that are currently unavailable.”)
5. 取消勾选“开启快速启动(Turn on fast startup)”并点击保存更改。
6. 重新启动您的 PC 以保存更改并查看您是否能够修复设备描述符请求失败（未知 USB 设备）。(Fix Device Descriptor Request Failed (Unkown USB Device).)
方法 5：更新通用 USB 集线器
1. 按Windows key + R 然后输入 devmgmt.msc 和 Enter 打开设备管理器。
2. 扩展通用串行总线控制器。(Universal Serial Bus controllers.)
3. 右键单击通用 USB 集线器(Generic USB Hub) 并选择“更新驱动程序”。(“Update Driver.”)
4. 现在，选择浏览我的计算机以查找驱动程序软件。(Browse my computer for driver software.)
5. 点击。让我从计算机上的驱动程序列表中进行选择。(Let me pick from a list of drivers on my computer.)
6. 从驱动程序列表中选择通用 USB 集线器(Generic USB Hub) ，然后单击下一步。(Next.)
7.等待(Wait)Windows完成安装，然后单击关闭(Windows)。(Close.)
8. 对于通用串行总线(Universal Serial Bus)控制器下的所有“ Generis USB Hub ”，请确保遵循步骤 4 至 8 。
9. 如果问题仍然解决，请对通用串行总线控制器下列出的所有设备执行上述步骤。(Universal Serial Bus controllers.)
此方法可能能够 修复设备描述符请求(Fix Device Descriptor Request)失败（未知 USB 设备(Unkown USB Device)），如果没有则继续。
方法6：移除电源(Remove Power Supply)以修复(Fix USB Device)无法识别的USB设备
如果由于某种原因您的笔记本电脑无法向USB 端口(USB Ports)供电，那么USB 端口(USB Ports)可能根本无法工作。要解决笔记本电脑电源的问题，您需要完全关闭系统。然后拔下电源线，然后从笔记本电脑中取出电池。现在按住电源按钮 15-20 秒，然后再次插入电池，但不要连接电源。打开系统电源并检查您是否能够修复设备描述符请求失败（未知 USB 设备）。(Fix Device Descriptor Request Failed (Unkown USB Device).)
方法 7：将BIOS更新到最新版本
执行BIOS更新是一项关键任务，如果出现问题，可能会严重损坏您的系统；因此，建议专家监督。
1. 第一步是识别您的BIOS版本，按Windows Key + R然后输入“ msinfo32 ”（不带引号）并按回车键打开系统信息(System Information)。
2.系统信息( System Information)窗口打开后，找到BIOS Version/Date，然后记下制造商和BIOS版本。
3. 接下来，访问您的制造商网站，例如在我的情况下是戴尔(Dell)，所以我将访问戴尔网站(Dell website)，然后输入我的计算机序列号或单击自动检测选项。
4. 现在，从显示的驱动程序列表中，我将单击BIOS并下载推荐的更新。
注意：更新(Note:)BIOS时请勿关闭计算机或断开电源，否则可能会损坏计算机。在更新过程中，您的计算机将重新启动，您将短暂看到黑屏。
5. 下载文件后，只需双击.exe文件即可运行它。
6. 如果您正确执行了上述所有步骤，您可能能够成功地将您的BIOS更新到最新版本。
受到推崇的：(Recommended:)
就是这样，您已成功修复设备描述符请求失败（未知 USB 设备）(Fix Device Descriptor Request Failed (Unkown USB Device))，但如果您对本教程仍有任何疑问，请随时在评论部分询问。
Fix Device Descriptor Request Failed (Unkown USB Device)
If you attach an external USB device to Windows 10 and get an error mesѕage saying “USB not recognized. Devicе Descriptor Request Failed” thеn you are at the right place as today we will see How to fix this error. The main issue is that you won’t be able to acсess your USB deνice because оf this error message. If yоu will click on the error nоtification оr you will go into device manager then right-click оn the malfunctioned device and select Prоperties you wіll see thе error message “The last USΒ device you connected to this computer malfunctioned, and Windows doeѕ not recognize it.”
One more thing to note here that the device which malfunctioned will be labelled as “Unknown USB Device (Device Descriptor Request Failed)” with a yellow triangle which will confirm that your device is not working properly or USB is not recognized as it is labelled as Unknown USB Device. So without wasting any time let’s see How to Fix Unkown USB Device (Device Descriptor Request Failed) with the help of the below-listed tutorial.
What is Device descriptor request failed Error?
The USB device descriptor is responsible for storing information related to various USB devices and recognizing these USB devices in future when connected to the system. If the USB is not recognized, then the USB device descriptor is not working properly on Windows 10 hence you will face the Device Descriptor Request Failed error. Depending on your system configuration, you may face one of the following error messages:
USB device not recognized. The last USB device you connected to this computer malfunctioned, and Windows does not recognized.
One of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it.
Try reconnecting the device. If Windows still does not recognize it, your device may not be working properly.
Unknown USB device (device descriptor request failed) code 43
USB\DEVICE_DESCRIPTOR_FAILURE
Causes of Device Descriptor Request Failed Error
- Outdated, corrupted or incompatible USB device drivers
- Virus or malware has corrupted your system.
- USB port is malfunctioned or not working properly
- BIOS is not updated which might cause this issue
- USB device might be damaged
- Windows cannot find the description of the USB device you might be using
Fix Device Descriptor Request Failed (Unkown USB Device)
Make sure to create a restore point just in case something goes wrong.
Method 1: Change USB Selective Suspend Settings
1. Right-click on the battery icon on Taskbar and select Power Options.
2. Next to your currently active Power Plan, click on Change plan settings.
3. Now click Change advanced power settings.
4. Find USB settings and then click on the Plus (+) icon to expand it.
5. Again expand USB selective suspend settings and make sure to select Disabled for both “On Battery” and “Plugged in”.
6. ClickApply followed by OK and Rebooted your PC to save changes.
Method 2: Use Hardware and Devices troubleshooter
1. Press Windows key + R then type Control and hit enter to open the Control Panel.
2. Now inside Control Panel Search box type troubleshooter and select Troubleshooting.
4. After that, click on Configure a device link under Hardware and Sound and follow the on-screen instruction.
5. If the problem is found, click Apply this fix.
See if you’re able to Fix Device Descriptor Request Failed (Unkown USB Device), if not then continue.
Method 3: Uninstall Unknown USB Drivers
1. Press Windows key + R then type devmgmt.msc and hit enter to open Device Manager.
2. In device Manager expands Universal Serial Bus controllers.
4. Connect your device, which is not being recognized by Windows.
5. You will see an Unknown USB device (Device Descriptor Request Failed) with a yellow exclamation mark under Universal Serial Bus controllers.
6. Now right-click on it and select Uninstall.
Note: Do this for all the devices under Universal Serial Bus controllers which have a yellow exclamation mark.
7. Restart your PC, and the drivers will be automatically installed.
Method 4: Disable Fast Startup
1. Press Windows Key + R then type control and hit Enter to open Control Panel.
2. Click on Hardware and Sound then click on Power Options.
3. Then, from the left window pane select “Choose what the power buttons do.”
4. Now click on “Change settings that are currently unavailable.”
5. Uncheck “Turn on fast startup” and click on Save changes.
6. Reboot your PC to save changes and see if you’re able to Fix Device Descriptor Request Failed (Unkown USB Device).
Method 5: Update Generic USB Hub
1. Press Windows key + R then type devmgmt.msc and Enter to open Device Manager.
2. Expand Universal Serial Bus controllers.
3. Right-click on Generic USB Hub and select “Update Driver.”
4. Now, select Browse my computer for driver software.
5. Click on. Let me pick from a list of drivers on my computer.
6. Select Generic USB Hub from the list of drivers and click Next.
7. Wait for Windows to finish the installation, then click Close.
8. Make sure to follow the steps 4 to 8 for all the “Generis USB Hub” present under Universal Serial Bus controllers.
9. If the problem is still resolved, follow the above steps for all the devices listed under Universal Serial Bus controllers.
This method may be able to Fix Device Descriptor Request Failed (Unkown USB Device), if not then continue.
Method 6: Remove Power Supply to Fix USB Device Not Recognized
If for some reason your laptop fails to deliver power to USB Ports, then it’s possible that the USB Ports might not work at all. To fix the issue with the laptop power supply, you need to shut down your system completely. Then remove the power supply cable and then remove the battery from your laptop. Now hold the power button for 15-20 seconds and then again insert the battery but don’t connect the power supply. Power ON your system and check if you’re able to Fix Device Descriptor Request Failed (Unkown USB Device).
Method 7: Update BIOS to the latest version
Performing BIOS update is a critical task, and if something goes wrong it can seriously damage your system; therefore, expert supervision is recommended.
1. The first step is to identify your BIOS version, press Windows Key + R then type “msinfo32” (without quotes) and hit enter to open System Information.
2. Once the System Information window opens locate BIOS Version/Date then note down the manufacturer and BIOS version.
3. Next, go to your manufacturer’s website, e.g. in my case it’s Dell, so I will go to Dell website and then enter my computer serial number or click on the auto-detect option.
4. Now, from the list of drivers shown, I will click on BIOS and will download the recommended update.
Note: Do not turn off your computer or disconnect from your power source while updating the BIOS or you may harm your computer. During the update, your computer will restart, and you will briefly see a black screen.
5. Once the file is downloaded, just double-click on the .exe file to run it.
6. If you have followed all the above steps correctly, you may be able to successfully update your BIOS to the latest version.
Recommended:
That’s it you have successfully Fix Device Descriptor Request Failed (Unkown USB Device) but if you still have any queries regarding this tutorial feel free to ask them in the comment’s section.
