When you connect a USB device, your host will create two EndPoints. Furthermore, the EndPoints created may differ between devices. A USB flash drive, for example, typically uses 3 to 4 EndPoints, whereas headsets can use up to 10 EndPoints. When the USB controller’s resources exceed their limits, you will receive the “the controller does not have enough resources for this device” error. Other factors, such as insufficient power resource capacity, corrupted USB Hub controllers, and the xHCI mode, can also cause the error. We have mentioned steps below to Fix “Not Enough USB Controller Resources” Error on Windows 11.
Ways to Fix “Not Enough USB Controller Resources” Error on Windows 11
Use the USB 2.0 Port
It’s no secret that USB 3.0 has numerous advantages over USB 2.0. However, USB 3.0 has more endpoints, which may cause Windows to display the “Not enough USB controller resources” error. In this case, connecting your devices via the USB 2.0 port may be sufficient to resolve the issue, especially if you’re using a USB mouse or keyboard. Connecting them via the 2.0 port will have no effect on their functionality.
Reinstall USB Drivers
If running the Hardware and Devices troubleshooter didn’t work, you should try reinstalling the USB drivers. Right-click the Start button and select Device Manager. Then, extend the USB controllers list and search for the drivers that include Host Controller in their name. Right-click one of them, select Uninstall device and confirm the action in the pop-up window. Restart your computer, so Windows will automatically reinstall the USB drivers. Alternatively, you could use a free driver updater if an outdated or corrupt driver is causing the error.
Run the Hardware and Devices Troubleshooter
To access the Hardware and Devices troubleshooter, launch Command Prompt in window privileges and type msdt.exe -id Device Diagnostic into the command line. This should open the Hardware and Devices window. Click Advanced, check the Apply repairs automatically box, and then click Next to run the troubleshooter.
Final Words
That’s it with our article on How to Fix “Not Enough USB Controller Resources” Error on Windows 11. Sometimes, while plugging in a USB device, you may see an error “Not Enough USB Controller Resources”. This error is known to occur most frequently with USB 3.0 ports and is not limited to any particular Windows version. The primary cause of this error is an End Point limitation.
