Your external drive may be entering selective suspend.
Your USB controllers may have become unstable or corrupt.
Windows may be missing other important updates hardware or software issues.
Your PC requires an update for issues that may conflict with a USB external hard drive and Windows.
The currently loaded USB driver has become unstable or corrupt.
This issue can be caused if any of the following situations exist: USB Device not recognized: One of the devices attached to this computer has malfunctioned and windows does not recognize it.Īpplies to: Windows 10, version 1709, Windows 7 Service Pack 1 Original KB number: 2654149 Cause When you try to access data on an external USB hard drive, you may receive the following error: This article provides methods to solve the USB Device not recognized error that occurs when you try to access a USB external hard drive. "USB Device not recognized" error when you try to access a USB external hard drive