Don’t use old X-Lite on Windows 11 — it’s unstable and insecure.
✅ Use Bria Solo for a modern, compatible, and free softphone experience.
If you need the classic X-Lite interface specifically, run it in Windows 10 compatibility mode or inside a Windows 10 VM, but that’s overkill for most users.
Even though it is the free version, X-Lite packs a punch regarding features:
In the world of business communication, Voice over Internet Protocol (VoIP) has become the standard. While there are dozens of softphones available, few have stood the test of time quite like X Lite. Originally developed by CounterPath (now part of Alianza), X Lite has been the go-to "starter" SIP softphone for IT professionals, call center agents, and remote workers for nearly two decades.
But with the release of Windows 11, a major question has emerged: Does X Lite work on Windows 11?
Microsoft’s latest operating system introduced significant changes to security architecture, audio routing, and UI scaling. This article dives deep into how to install, configure, and optimize X Lite for Windows 11, exploring its features, limitations, and whether you should stick with this classic tool or upgrade to a modern alternative.
For those determined to use X Lite on Windows 11, here is the "power user" configuration to stabilize it.
1. Disable Windows 11 USB Power Management Open Device Manager > Universal Serial Bus controllers > Right-click each "USB Root Hub" > Properties > Power Management > Uncheck "Allow the computer to turn off this device."
2. Change the Audio Codec Priority In X Lite: Menu > Preferences > Audio Codecs. Move PCMU (G.711 u-law) and PCMA (G.711 a-law) to the top. Uncheck iLBC and Speex (these cause crashes on Win11).
3. Add Registry Fix for High CPU
Open Registry Editor (Regedit). Navigate to HKEY_CURRENT_USER\Software\CounterPath\X-Lite\Settings. Create a new DWORD (32-bit) named DisableGPUAcceleration and set value to 1. This stops X Lite from fighting with Windows 11's WDDM 3.0 drivers.
4. Use a wired headset Windows 11 Bluetooth stack frequently disconnects the "Hands-Free Telephony" profile required by X Lite. A simple USB headset (Jabra, Logitech) works flawlessly.
X Lite comes in several editions (e.g., "Ultra Lite," "Optimum," "Micro 11"), each representing a different trade-off between minimalism and functionality. The most radical version, "Micro 11," strips away nearly everything non-essential. Key removals include:
Despite these removals, X Lite retains key features that define Windows 11’s modern identity: the redesigned centered taskbar, rounded window corners, snap layouts, virtual desktops, support for DirectX 12, and compatibility with most Win32 applications, including Steam, Office, Adobe Creative Suite, and Chrome.