adb shell error error: device unauthorized

2022/7/29 oppo-r11s Android 8-Pro test successful

After the Windows computer is connected to the Android device, it wants to enter the device through the terminal command line, and an error occurs

Error content

C:\Users>adb shell

error: device unauthorized.
This adb server's $ADB_VENDOR_KEYS is not set
Try 'adb kill-server' if that seems wrong.
Otherwise check for a confirmation dialog on your device.

Check items:

1. Is the data cable plugged in securely

2. Whether the developer option is turned on

3. Whether the USB debugging option is turned on

If the above checks are in normal state, you can use the following methods to solve the problem:

Enter adb kill-server on the command line to close the adb service and then adb devices, it will automatically start the service. After querying the device, enter adb shell again to test it successfully.

If you fail unfortunately, you can enter adb start-server to restart the service you just shut down.

adb kill-server