Windows 11 is stricter about driver signing and security than Windows 10. While Windows often attempts to install a generic driver automatically via Windows Update, it frequently fails to identify the specific CH340 chip, or installs a driver that results in a "Device Descriptor Request Failed" error.
This is the standard procedure that works for 90% of users. ch340 drivers windows 11
Before you download anything, prepare your system to avoid "Access Denied" or installation failures. Windows 11 is stricter about driver signing and
Zadig is a tool that replaces USB drivers with WinUSB or libusb. This works for CH340 if you only need generic serial communication (not advanced chip features). ch340 drivers windows 11