Fix Unknown USB Device in Windows 10 (Device Descriptor Request Failed)
You may find that when you connect an external USB drive, it doesn’t work on your computer. Instead, you get an error message: The last USB device you connected to this computer malfunctioned, and Windows does not recognize it. This may be because the device incompatible with your system. The USB Device Descriptor is responsible for storing information related to various USB devices connected to it so that Windows operating system may recognize these USB devices in the future. If the USB is not recognized, then the USB device descriptor is not working properly on Windows 10. The unrecognized device in Device Manager will be labeled as 未知的USB設備（設備描述符請求失敗） ，與 帶有驚嘆號的黃色三角形. The unknown USB device issue may arise due to various reasons. Today, we will help you fix the Unknown USB Device: Device Descriptor Request Failed error in Windows 10 PC.
How to Fix Unknown USB Device (Device Descriptor Request Failed) in Windows 10
You may face these common errors due to an Unknown USB Device issue:
- 設備描述符請求失敗
- Port Reset Failed
- Set Address Failed
There can be several reasons behind this issue, such as:
- Outdated USB Drivers: If the current drivers in your Windows PC are incompatible or outdated with the system files, then you may face this error.
- Enabled USB Suspend Settings: If you have enabled the USB Suspend settings in your device, then all the USB devices will be suspended from the computer if they are not in active use.
- Outdated Windows OS: In some circumstances, it could be that the Windows operating system running on your device is outdated and thus, conflicting with the device drivers.
- Malfunctioning USB ports: Unclean surroundings might also contribute to the poor performance of your USB drive since the accumulation of dust will not only block the ventilation to the computer but also, cause USB ports to malfunction.
- 的BIOS is not updated: This too may cause such problems.
A list of methods to fix Unknown USB Device: Device Descriptor Request Failed error in Windows 10 computers has been compiled and arranged according to user convenience. So, keep reading!
方法 1：基本故障排除
Method 1A: Maintain Clean & Ventilated Ambience
Unclean surroundings and dusty USB ports may cause an Unknown USB Device error in your Windows 10 desktop/laptop. Hence, you should implement the following steps:
1. Clean laptop vents & 端口。 Use a compressed air cleaner while being extremely careful not to damage anything.
2. Moreover, ensure enough space for 適當的通風 of your desktop/laptop, as shown.
Method 1B: Resolve Hardware Issues
Sometimes, a glitch in the USB port or power supply might trigger an unknown USB device Windows 10 error. Hence, you should perform the following checks:
1. 如果問題是由電源引起的，則 嘗試 拔下筆記型電腦後重新插入 USB 設備 從電源。
2. 連接另一個 USB 設備 with the same USB port and check if there is an issue with the port.
3. 將 USB 裝置插入 不同的連接埠 以排除 USB 連接埠的問題。
Method 1C: Restart Windows PC
In most cases, a simple restart might fix Unknown USB Device (Device Descriptor Request Failed) issue.
1. 斷開 USB 設備。
2. 重新啟動 您的 Windows 電腦。
3. 重新連接 the USB device and check if it worked or not.
方法 2：運行 Windows 疑難解答
You should try running the in-built Windows troubleshooter to fix Unknown USB Device (Device Descriptor Request Failed) issue in Windows 10. You can do so in the two ways explained below.
Option 1: Run Hardware and Devices Troubleshooter
1。 按 Windows + R 鍵 同時啟動 跑 對話框。
2。 類型 msdt.exe -id設備診斷 並點擊 OK， 如圖所示。
3. Here click on the 高級 選項，如下突出顯示。
4. 選取標記的方塊 自動應用維修 並點擊 下一頁.
5. Once the process is completed, 重啟你的電腦 and check if USB is being recognized now.
Option 2: Troubleshoot Malfunctioning USB Device
1。 從 任務欄， 右鍵點擊 USB Device icon.
2。 選擇 Open Devices and Printers 選項，如圖所示。
3。 右鍵單擊 USB設備 （例如 克魯澤刀片），然後選擇 疑難解答，如下所示。
4. Windows疑難解答 will automatically detect problems and fix these as well.
注意： If the troubleshooter states that it could not identify the issue, then try the other methods discussed in this article.
相關閱讀： Fix USB device not recognized by Windows 10
方法3：更新USB驅動程式
To fix Unknown USB Device (Device Descriptor Request Failed) issue in Windows 10, you are advised to update USB drivers, as follows:
1。 類型 “設備管理器” ，在 Windows搜索欄 並擊中 回車鍵 推出它。
2。 轉到 通用串行總線控制器 section and expand it with a double-click.
3. 現在，右鍵單擊 USB 司機 （例如 Intel(R) USB 3.0 eXtensible Host Controller – 1.0 (Microsoft)) and select 更新驅動程序.
4。 接下來，單擊 自動搜尋驅動程式。
5A. Your driver will 更新 itself to the latest version.
5B. If your driver is already up-to-date, then you will get the message: The best drivers for your device are already installed.
6。 點擊 關閉 to exit the window and R是 電腦。
7. 重複 the same for all USB drivers.
Method 4: Roll Back USB Drivers
If the USB device had been working correctly, but began to malfunction after an update, then rolling back the USB Drivers might help. Follow the given instructions below to do so:
1。 導航 Device Manager > Universal Serial Bus controllers 如中所解釋的 方法3.
2。 右鍵單擊 USB驅動程序 （例如 Intel(R) USB 3.0 eXtensible Host Controller – 1.0 (Microsoft)），然後選擇 氟化鈉性能，如下圖所示。
3。 在裡面 USB Device Properties 窗口，切換到 司機 選項卡並選擇 回滾驅動程序。
備註: If the option to Roll Back Driver is greyed out in your system, it indicates that your system does not have any updates installed for the driver. In this case, try alternative methods discussed in this article.
4。 選擇 為什麼要回滾？ from the given list and click on 是 確認。
5. After the process is finished, click on OK 應用此更改。
6. Finally, confirm the prompt and 重新開始 您的系統以使回滾有效。
相關閱讀： Fix Universal Serial Bus (USB) Controller Driver Issue
Method 5: Reinstall USB Drivers
If the above methods to update or roll back drivers do not work, then you can try to reinstall your USB driver. Here’s how to fix Unknown USB Device (Device Descriptor Request Failed) issue:
1。 去 設備管理器> 通用串行總線控制器, using the steps mentioned in 方法3.
2。 右鍵單擊 Intel(R) USB 3.0 eXtensible Host Controller – 1.0 (Microsoft) 並選擇 卸載設備， 如圖所示。
3。 現在，點擊 卸載 並重新啟動您的電腦。
4. Now, download the latest USB driver from manufacturer website like Intel.
5. Once downloaded, install the latest USB driver. Then, connect your USB device and check if the said error is rectified.
Method 6: Disallow PC to Turn Off USB Device
The USB power-saving feature allows the hub driver to suspend any individual USB port without affecting the function of other ports, in order to save power. This feature, however useful, may still cause Unknown USB Device issue when your Windows 10 PC is idle. Hence, disable the automatic USB suspend feature using the given steps:
1。 導航到 “設備管理器” 如圖所示 方法3.
2. Here, double-click on 人機接口設備 擴大它。
3.右鍵單擊 USB輸入設備 並選擇 屬性。
4. Here, switch to the 電源管理應用 tab and uncheck the box titled 允許電腦關閉此設備以節省電力。
5.最後，點擊 OK 和 重新開始 你的系統。
相關閱讀： 修復USB不斷斷開和重新連接的問題
Method 7: Disable USB Selective Suspend Feature
The selective suspend feature too, helps you to conserve power while disconnecting USB sticks and other peripherals. You can easily disable the USB Selective Suspend feature via Power Options, as explained below:
1。 類型 控制 面板 ，在 Windows搜索欄 並點擊 已提交.
2。 選擇 查看方式 > 大圖標，然後單擊 電源選項， 如圖所示。
3. 在這裡，點擊 更改計劃設置 in your currently selected plan section.
4。 在裡面 編輯計劃設置 窗口，選擇 更改高級電源設置 選項。
5. 現在，雙擊 USB設置 擴大它。
6. 再次雙擊 USB選擇性掛起設置 擴大它。
7. 在這裡，點擊 在電池 並將設置更改為 殘疾人 from the drop-down list, as illustrated.
8。 現在，點擊 插在 並將設置更改為 殘疾人 這裡也是。
9.最後，點擊 登記 >好 to save these changes. Restart your PC and check if the issue is solved now.
Method 8: Turn Off Fast Startup
Turning off the fast startup option is recommended to fix Unknown USB Device (Device Descriptor Request Failed) issue in Windows 10. Just, follow the given steps:
1。 轉到 控制台 > 電源選項 如圖所示 方法7.
2. 在這裡，點擊 選擇的電源按鈕做什麼 左側欄中的選項。
3. 現在，選擇 更改當前不可用的設置 選項。
4. Next, uncheck the box 打開快速啟動（推薦） 然後點擊 保存更改 如下圖所示。
5。 最後， 重新開始 您的 Windows 電腦。
相關閱讀： Fix USB Device not Recognized Error Code 43
方法 9：更新 Windows
Always ensure that you use your system in its updated version. Otherwise, it will cause the said problem.
1。 類型 檢查更新 ，在 Windows搜索欄 並點擊 已提交.
2. 現在，單擊 檢查更新 按鈕。
3A. Follow the 屏幕指示 下載並安裝可用的最新更新。
3B。如果您的系統已經是最新的，那麼它會顯示 你是最新的 信息。
4. 重新啟動 your system and check if the issue is resolved now.
方法10：更新BIOS
If the above method could not fix Unknown USB Device issue in your Windows 10 desktop/laptop, then you can try updating system BIOS. Read our elaborate tutorial to understand What is BIOS, How to check the current BIOS version, and How to update System BIOS here.
專業貼士： Use the given links to Download Latest BIOS Version for 聯想, 戴爾 & HP 筆記本電腦。
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我們希望你能學習 如何 fix Unknown USB Device (Device Descriptor Request Failed) issue in Windows 10 problem. Let us know which method helped you the best. Also, if you have any queries or suggestions, then feel free to drop them in the comments section.
