Nerf Radar › Rainbow Six Siege › Y10S4.1
Rainbow Six Siege: Y10S4.1 Patch Notes (Dec 11, 2025): what changed
Rainbow Six Siege: Y10S4.1 Patch Notes was published on Dec 11, 2025 and includes 15 fixes.
TL;DRThis update is mostly bug fixes. Every change below links back to the official notes.
Who this matters to
All players
This update's changes are listed below exactly as the official notes describe them.
All 15 changes
Gameplay
History · 13 patches →Fix
Fixed: Mute's Signal Disruptor can deactivate Fuze's Cluster Charge.
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FIXED - Mute's Signal Disruptor can deactivate Fuze's Cluster Charge.
Fix
Fixed: Players can't crouch through a damaged barricade without entirely destroying it in the process.
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FIXED - Players can't crouch through a damaged barricade without entirely destroying it in the process.
Fix
Fixed: Defenders aren't detected outside while standing on a ledge above EXT Courtyard on the Fortress map.
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FIXED - Defenders aren't detected outside while standing on a ledge above EXT Courtyard on the Fortress map.
Fix
Fixed: Enemy outlines aren't visible for anyone when Solis's SPEC-IO Electro Sensor is active.
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FIXED - Enemy outlines aren't visible for anyone when Solis's SPEC-IO Electro Sensor is active.
Fix
Fixed: Players may be unable to move after going prone at 1F Back Entrance on House map.
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FIXED - Players may be unable to move after going prone at 1F Back Entrance on House map.
Fix
Fixed: In Dual Front, players don't immediately respawn in the next active sector when they've stayed in a lost sector too long.
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FIXED - In Dual Front, players don't immediately respawn in the next active sector when they've stayed in a lost sector too long.
Fix
Fixed: In Dual Front, the defend objective icon doesn't fully load on the minimap and HUD after respawning.
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FIXED - In Dual Front, the defend objective icon doesn't fully load on the minimap and HUD after respawning.
Fix
Fixed: In some prone positions, shooting an enemy in the arm doesn't hurt them.
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FIXED - In some prone positions, shooting an enemy in the arm doesn't hurt them.
Fix
Fixed: Players can equip the PMR90A2 without it being unlocked. This causes a crash.
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FIXED - Players can equip the PMR90A2 without it being unlocked. This causes a crash.
Level Design
History · 6 patches →Fix
Fixed: Gap present after barricading a door at 2F Cash Corridor on Theme Park map.
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FIXED - Gap present after barricading a door at 2F Cash Corridor on Theme Park map.
User Experience
History · 14 patches →Fix
Fixed: Wrong Operator pool listed in the Seasonal Content guide for Dual Front.
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FIXED - Wrong Operator pool listed in the Seasonal Content guide for Dual Front.
Fix
Fixed: Duplicate Owned tag is present for various cosmetics when customizing loadout in the Operators section.
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FIXED - Duplicate Owned tag is present for various cosmetics when customizing loadout in the Operators section.
Fix
Fixed: Can't browse the Ranks & Rewards section on consoles.
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FIXED - Can't browse the Ranks & Rewards section on consoles
Fix
Fixed: Reconnecting to an online Custom Game sometimes results in an error stating the game is full.
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FIXED - Reconnecting to an online Custom Game sometimes results in an error stating the game is full.
Fix
Fixed: The sound effect when deploying Goyo's Vulcan Canister cuts off before finishing.
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FIXED - The sound effect when deploying Goyo's Vulcan Canister cuts off before finishing.
Related changes in Rainbow Six Siege
Structured by Nerf Radar from the official notes (parsed automatically and reviewed by hand). Backfilled Oct 21, 2026 from the official notes: parser output only (no hand edits); labels follow the numbers or explicit wording, unclear lines are held for review. Source: store.steampowered.com · fetched Oct 21, 2026.