If you get an "Access Denied" error, ensure you are running PowerShell as an . Step 3: Update usbipd-win
Download and install the latest version from the official USBIPD-WIN GitHub releases page. How to Prevent the Warning in the Future
Run the following command to check if port 3240 is occupied: powershell netstat -ano | findstr :3240 Use code with caution.
When using usbipd-win , the warning usually indicates that the background service responsible for managing USB/IP connections—often specifically the VBoxUsbMon driver—has failed to start automatically after installation or a system change . Core Issue: Service Failure If you get an "Access Denied" error, ensure
is a common roadblock. While the message suggests a simple restart, the underlying issue usually stems from a communication break between the Windows USBIPD-WIN agent and the WSL instance. Why It Happens
Manually attempt to bind the server:
Open PowerShell or Command Prompt as an administrator and run the command: sc query usbipd . Look for a line that says STATE : 4 RUNNING . If it says STOPPED , the service is not active. When using usbipd-win , the warning usually indicates
If this returns a line of data, the port is in use. Look at the number at the far right of the output—this is the Process ID (PID). Kill the conflicting process using its PID: powershell Stop-Process -Id [Insert_PID_Here] -Force Use code with caution. Restart the USBIPD service. Step 4: Repair or Reinstall USBIPD-WIN
If successful, the warning will disappear, and you will see a structured list of your physical hardware devices along with their respective bus IDs:
The warning message clearly indicates that the essential usbipd service on your Windows host is not running. The service is the critical bridge that allows USB devices to be shared. Why It Happens Manually attempt to bind the
If the service works temporarily but throws the error every time you turn on your computer, the startup type is likely misconfigured. Open services.msc again. Right-click and choose Properties . Locate the Startup type dropdown menu. Change it from Manual to Automatic . Click Apply and then OK . Method 2: Fix Corrupted Installations
A recent update of USBIPD-WIN didn't restart the service properly.
If it is already marked as Running , right-click it and select . Method B: Using an Elevated PowerShell Prompt
Scroll down the list to find .
Before changing any deep system configurations, try starting the service manually through Windows Services. Press Win + R to open the Run dialog box. Type services.msc and press .