SteamVR Error 303
Author: SenipAussieCreated Jun 3, 2026Updated Sep 20, 2026
Description / General Troubleshooting
Using Steam VR 2.16.6 with ALVR v20.14.1 and it seems steam is throwing error 303 for "A Key component of SteamVR isn't working correctly. Please reinstall". I did both a steamVR Cache Verification and a SteamVR re-install. Both seem to have failed. Starting steam alone gets me error 496. Seems ALVR related.
Environment
Wayland
Hardware
AMD Ryzen 7 9800X3D (16) @ 5.27 GHz AMD Radeon RX 7900 XT [Discrete]
Source: alvr-org/ALVR