COSM-GAME ELDEN RING NIGHTREIGN Hotfix 1.03.5 Fixes Co-op Performance Bug
Bandai Namco released ELDEN RING NIGHTREIGN Hotfix 1.03.5 on March 31, 2026, fixing a bug that could reduce performance for every player in a multiplayer Expedition.
Game summary
News summary
Repeated specific actions during an Expedition can no longer cause party-wide performance degradation.
The targeted versions are PlayStation 4, PlayStation 5, Xbox One, Xbox Series X|S, and Steam.
After installation, the title screen should show App Ver. 1.03.2 and Regulation Ver. 1.03.5.
The latest regulation must be applied before online matchmaking or co-op play.
Update overview
Bandai Namco lists one correction in Hotfix 1.03.5: repeatedly using unspecified actions during a multiplayer Expedition could lower performance for everyone in the session. The notes do not identify a Nightfarer, weapon, skill, route, or enemy connected to the trigger.
On PlayStation and Xbox consoles, regulation files are delivered after players log in to the server. Anyone who does not see Regulation Ver. 1.03.5 in the lower-right corner of the title screen should select LOGIN, apply the current regulation, and restart the game.
Key details
The March 31 release changes the regulation data while retaining App Ver. 1.03.2. Bandai Namco requires the hotfix for online play.
| Detail | Confirmed value |
| Hotfix | 1.03.5 |
| App version | 1.03.2 |
| Regulation version | 1.03.5 |
| Platforms | Steam, PlayStation 4, PlayStation 5, Xbox One, Xbox Series X and Series S |
| Fixed issue | Party-wide performance degradation caused by repeated specific actions during a multiplayer Expedition |
| Player action | Apply the latest regulation, then restart the game |
| Online requirement | Required |
Source timeline
May 30, 2025 — Bandai Namco Entertainment’s game page established the released platforms and FromSoftware development credit.
March 31, 2026 — Bandai Namco Entertainment Europe published Hotfix 1.03.5 with the affected platforms, corrected multiplayer issue, title-screen versions, console login instructions, restart step, and online requirement.
FAQ
4 questionsRepeated specific actions during a multiplayer Expedition no longer degrade performance for every player in the session.
The lower-right corner of the title screen should show App Ver. 1.03.2 and Regulation Ver. 1.03.5.
Log in to the server and select LOGIN if Regulation Ver. 1.03.5 is not displayed, then restart the game.
Yes. Bandai Namco requires the latest update before matchmaking and cooperative play are available.