VBoxWebSrv is the VirtualBox Web Service that allows you to manage your VirtualBox virtual machines remotely through a web-based API. It is commonly used with tools like phpVirtualBox to provide a full web interface for VM control.

By running VBoxWebSrv as a Windows service, you ensure it starts automatically with your system and runs continuously in the background.

Installing VBoxWebSrv as a Windows Service with NSSM

1. Download NSSM (Non-Sucking Service Manager) from https://nssm.cc/download and extract it.

2. Open Command Prompt as Administrator and run:

   C:\nssm\win64\nssm.exe install VBoxWebSrv
   

3. In the NSSM GUI:

   Set Path to C:\Progra~1\Oracle\VirtualBox\VBoxWebSrv.exe

   Set Startup directory to C:\Progra~1\Oracle\VirtualBox

   Add arguments
   -H 0.0.0.0 -p 18083

4. Click Install service

5. Start the service with:

   C:\nssm\win64\net start VBoxWebSrv
   

6. Open the port 18083 in the Windows Firewall

7. Test if the service is available

   C:\nssm\win64\netstat -an | findstr 18083
   
   C:\nssm\win64\curl http://localhost:18083/
   
   C:\nssm\win64\telnet localhost 18083