Marathon Mouse Not Working (PC)
Mouse or cursor stops working in Marathon on PC — often when streaming or when overlays (Steam, Discord) are active. Bungie released a patch in Feb 2026.
✓ Patch Available — Restart to Fix← Check Live Server Status
Quick Fix
Restart your Marathon client to download Bungie's patch. If still broken: disable Steam overlay, Discord overlay and Always-on game clipping, close screen capture tools.
Step-by-Step Fixes
- [PC] Restart Marathon to get Bungie's patch (Feb 27, 2026)
- [PC] If streaming: stream your whole screen, not the Marathon game window specifically
- [PC] Steam: Settings → In Game → turn off "Enable the Steam Overlay while in-game"
- [PC] Discord: disable overlay and "Always-on game clipping", or use Discord web instead of desktop
- [PC] Close screen sharing, screen capture, or screen measurement utilities
- [PC] If mouse stops after a few seconds: lower polling rate below 1000 Hz in mouse software
- [PC] Press Alt+Enter for windowed mode; run Steam as Administrator
What Causes Mouse / Input?
Mouse input issues in Marathon were caused by conflicts with streaming software, overlays (Steam, Discord), and screen capture tools. Bungie patched the root cause. If you still have issues, overlays and streaming can reintroduce similar behavior.
Related Errors
Still Not Fixed?
Submit a ticket or check official status:
- → Marathon Help — Submit a ticket
- → @BungieHelp — Official status updates
- → Live server status — MarathonStatus.com