How to Fix Roblox Error Code 902: Meaning, Root Causes & Solutions
Roblox Error Code 902 is a client-side connectivity problem with the exact client signature "Audio input device failed to initialize. Voice chat disabled. (Error Code: 902)". It is primarily caused by microphone hardware device locked in exclusive mode by discord, obs, or daw software. and can be resolved by uncheck "allow applications to take exclusive control" in windows sound control panel and set mic sample rate to 48,000 hz.
| Telemetry Metric | Verified Value |
|---|---|
| Exact Client Modal String | “Audio input device failed to initialize. Voice chat disabled. (Error Code: 902)” |
| Diagnostic Fault Classification | Client-Side (Local Network / Device Fixable) |
| Affected Executables & Binaries | RobloxPlayerBeta.exe |
| Fastest 60-Second Resolution | Uncheck "Allow applications to take exclusive control" in Windows Sound Control Panel and set mic sample rate to 48,000 Hz. |
| Last Tested Client Build Hash | version-9d1a3b4c8e2f01aa |
| Official Documentation Citation | Official Roblox Help Center Citation → |
Instant 60-Second Quick Resolution Protocol
Roblox Error Code 902 occurs when the spatial voice engine fails to open the local microphone input stream, typically due to Windows exclusive audio mode locking, privacy microphone permission blocks, or hardware sample rate incompatibility.
Why Roblox Error Code 902 Happens (Client Crash & Memory)
Roblox Error Code 902 occurs when microphone hardware device locked in exclusive mode by discord, obs, or daw software. In technical terms, the client engine logs indicate that packet exchanges fail during the synchronization phase, triggering the modal message: “Audio input device failed to initialize. Voice chat disabled. (Error Code: 902)”.
Roblox Client Telemetry Log Signature:
[FLog::Audio] SpatialVoice::InitCaptureDevice: WASAPI exclusive mode device conflict or sample rate mismatch
How to Fix Roblox Error Code 902 on Windows 10 & 11
Execute these verified steps in sequence on Windows PCs to resolve Error Code 902:
Step 1: Disable Exclusive Audio Control
2750 SolvedOpen mmsys.cpl > Recording tab > Microphone Properties > Advanced > uncheck "Allow applications to take exclusive control of this device".
Step 2: Enable Windows App Microphone Privacy Access
2340 SolvedGo to Windows Settings > Privacy & Security > Microphone > ensure "Let desktop apps access your microphone" is toggled ON.