The 'free download' phrasing here is worth confirming directly: UltraVNC has always been free and open-source under the GPL, with no paid tier, trial limits, or feature paywall, unlike many commercial remote-desktop tools that advertise a free trial before locking features. It's built specifically for Windows-to-Windows remote control, pairing a Server component installed on the PC being accessed with a Viewer component installed on the controlling PC, and includes file transfer and chat built in.
Server vs. Viewer: What You Actually Need to Install
UltraVNC splits into two separate pieces during setup, and picking the wrong one is the most common setup mistake: install the UltraVNC Server on the computer you want to access remotely, and the Viewer on the computer you'll be controlling from. Most users doing remote support install both on their own machine and only the Server on the remote one.
Because it's open-source, UltraVNC also supports optional plugins like MS-Logon authentication and encryption add-ons for tighter network security in business environments.
Who ends up using UltraVNC
UltraVNC tends to be used by IT support staff and hobbyists who need direct Windows-to-Windows remote control on a local network or over a VPN.
- IT helpdesk staff remotely troubleshooting office PCs on the same network
- Home users setting up unattended access to a desktop from a laptop elsewhere in the house
- System administrators scripting remote reboots and file transfers to Windows machines
Before you install
A couple of things worth knowing about UltraVNC before you request the link: it only ships for Windows, so double-check that's the machine you're installing it on before you request the link. And on pricing, UltraVNC is open source, so the installer is free with no trial timer, feature lock, or upsell screen to click past. It's developed and maintained by UltraVNC Team.
System requirements
- WindowsWindows 10 or 11 (64-bit); older 7/8.1 builds usually still run but no longer get official support
Heavier workloads (large files, high-res media, big projects) will naturally want more RAM and a faster CPU/GPU than the bare minimum.
Quick steps
- Download the UltraVNC installer from uvnc.com
- During setup, choose Server (host being accessed), Viewer (controlling PC), or both
- Set a VNC password on the Server and connect to it from the Viewer using its IP address
UltraVNC: the honest trade-offs
- Completely free and open-source with no feature paywall or trial limits
- Built-in file transfer and chat reduce the need for separate remote-support tools
- MS-Logon plugin adds domain-authenticated access for business environments
- No built-in relay service, so internet use needs manual port forwarding or a VPN
- Interface and setup feel dated next to modern remote-desktop tools
The download here points to UltraVNC's official uvnc.com distribution, matching the open-source project's own release page.
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Keeping UltraVNC up to date
Since UltraVNC is open source, most Linux distributions keep it current through their own package manager. On Windows/macOS, re-running the installer from the official site (or an updater built into the app, if it has one) gets you the latest release. Sticking to the developer's own distribution channel — which is what this page links to — means you're never stuck on an old build with unpatched bugs just because a mirror site stopped updating its copy.
Features, install steps, alternatives and more detail live on the main UltraVNC page.
Frequently asked questions
Does UltraVNC cost anything to unlock full features?
No, it's entirely free and open-source with no paid upgrade — every feature, including file transfer and remote reboot, is included by default.
Can I use UltraVNC over the internet, not just a local network?
Yes, but it typically requires port forwarding or a VPN since UltraVNC doesn't include its own relay service the way some commercial tools do.
