:If your server is set to use Windows credentials instead of a standard VNC password, use the -user flag: vncviewer.exe -connect [IP_ADDRESS] -user [USERNAME] -password [PASSWORD] . 2. Saving and Loading .vnc Config Files
You can automate the process through scripts if you manage multiple servers.
UltraVNC runs as a system service, but to interact with the desktop, the user must be logged into Windows. Use Windows : ultravnc auto login
This is the more powerful—and dangerous—feature. When the UltraVNC server runs as a Windows service, it can optionally launch the Windows logon process automatically after a reboot, using stored Windows credentials. This gives you instant GUI access to the remote desktop, even if the machine reboots.
. While "auto login" in the sense of a one-click bypass of all prompts isn't a native "button" in the UI, you can achieve it through saved connection files (.vnc) command-line arguments Super User How "Auto Login" Works in UltraVNC :If your server is set to use Windows
This is the safest way to enable UltraVNC auto login.
Auto-login is a trade-off between convenience and security. Follow these rules to avoid breaches: UltraVNC runs as a system service, but to
UltraVNC SC is designed for reverse connections (helpdesk scenarios). Auto-login works differently here—you embed the credentials in the helpdesk.txt file: