Inside Device Manager, expand the Universal Serial Bus controllers, right-click on your USB host controller and click Uninstall Device. Then, type “devmgmt.msc” and press Enter to open up Device Manager. Press Windows key + R to open up a Run dialog box. You might be able to resolve the “ Not Enough USB Controller Resources” error by using Device Manager to reinstall the USB controller driver. Method 3: Reinstalling the Universal Serial Bus ControllersĪs some users have reported, this particular issue can also occur if the USB controller driver was badly installed or got corrupted somehow. To stay efficient, we advise you to follow the methods in the order that they are presented in. If you’re encountering the “ Not Enough USB Controller Resources” error and you’re looking for some methods that will allow you to resolve or circumvent the issue, this article will provide you with some troubleshooting guides.ĭown below, you’ll find a collection of methods that other users in a similar situation have successfully used to get the issue resolved. Using a docking station or a USB with its own power source will resolve the issue in this case. Power being drawn from the USB devices exceeds the maximum capacity – If you’re encountering this particular issue on a notebook or laptop, it’s very likely that the amount of power being drawn from the USB devices exceeds the maximum capacity. Because of this, you can only use USB ports to a limited extent. But since most devices will use primarily IN EndPoints, you’ll run out of them pretty quick. 
The USB port EndPoints usage exceeded the limit – Most USB controllers are capped at 16 IN & 16 OUT EndPoints for every available port.
Keep in mind that USB 3.0 controllers have a limit of 96 Endpoints per controller on Intel XHCI controllers while AM4 controllers support 254 EndPoints. USB Controller limit is exceeded – If you use a lot of USB devices which are using a lot of EndPoints, you might see this error message because you’ve exceeded the available number of EndPoints.
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