Cybercriminals sometimes name malicious files after legitimate system or third-party drivers to avoid detection. If you find fusbhub.sys in the C:\Windows\System32\drivers folder (where the official Windows usbhub.sys resides) but you do not have FlexiHub installed, it may be a Trojan or miner. Troubleshooting fusbhub.sys Errors

Faulty external USB hubs or devices can sometimes trigger crashes in virtual drivers like fusbhub.sys . Disconnect all non-essential USB peripherals and restart your computer to isolate the issue.

Alternatively, uninstall the software via to see if the system stability improves. 2. Run System Repairs

Since fusbhub.sys is not a native Windows file, the first step is to manage the application that installed it.

One of the most critical aspects of fusbhub.sys is identifying whether the file on your system is safe.