September 25, 2026: volumetric fog rendering issues
Valve’s September 25 update fixes rendering issues with volumetric fog. The short release note does not identify a particular headset or graphics setting as the sole cause, so this entry stays at the stated rendering scope. [1]
September 17, 2026: the game or Workshop tools failed to launch
The September 17 update fixes issues preventing some users from launching the game or its Workshop tools. Valve separately addresses various stability issues across platforms. The note gives no single manual-file replacement procedure for launch failures. [1]
September 17, 2026: validation errors through Linux Proton
The same update fixes validation errors when launching the game on Linux through Proton. This is the launch route named by Valve; it does not establish an equivalent defect for every native Linux program or Windows installation. [1]
Teleport stops at the edge of a hidden drop
Valve describes partial teleport movement at drop-offs when the destination is not visible from the starting point. The system stops at the edge so the player can inspect the terrain below. That pause is intentional navigation behavior. [2]
Documented steps
- Inspect the terrain below from the edge before selecting the next movement destination. [2]
Sources & verification
Platform and version details belong to the individual issue or guide section. A documented workaround may not resolve every case.
- September 25, 2026 Update official-newsRetrieved
- Half-Life: Alyx Locomotion Deep-Dive official-newsRetrieved