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A device attached to the System is not working – what to do?

  • Feb 04, 2026
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If the message "A device attached to the System works is not" displayed in Windows on your PC is often a driver error. How to fix the Problem, and what other causes are in question, you will learn in this article.

A device attached to the System is not working: This is what you can do

  • If you connect external Hardware to your PC and the message "A device attached to the System is not functioning" appears, you should install the current driver for the device. Also, check whether your operating system is up to date. Otherwise, install all available Updates.
  • For this you can use the device Manager in Windows. Detailed instructions on the procedure see you in another separate practice tip.
  • Alternatively you can find for most of the devices current driver on the manufacturer's website. This allows you to install it manually via an.EXE file.
  • You disconnect after the driver Installation, the respective Hardware of your PC and restart the Computer. Connect the device, then again, and wait a few seconds.
Device is not working: What to do?

Problem solution: A device attached to the System is not working

  • If the error message appears after reinstalling the drivers, you should check the appropriate device. Many of the Smartphones you must select the setting "As a media device connect" and the phone is unlock so, the PC recognizes it.
  • Try also a different USB Port. A defective interface can also cause the error message to appear. Also, check whether the connected device is working properly and connect it with another PC.
  • Occasionally the Problem also occurs in the case of different programs that work correctly. In this case, the Uninstallation and subsequent reinstallation of the Tools is recommended.
  • In older versions of Windows, the error message appears partially in the case of programmes based on Virtual Basic 3.0. Also in MS-DOS sessions, the Problem occurs occasionally. In this case, the Microsoft Support Center and follow the instructions accordingly before.
In the next practical tip learn, what you can make, if your USB Stick is not recognized.

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