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Known Issues
9/2/2026
[Notice] Bonus Coin UP Event Schedule Correction & Reminder
Dear MUtizens We would like to inform you that there is an incorrect date displayed in the previously announced Bonus Coin UP Event banner from Season 21-1 3rd Update [LINK]. The event end date has been corrected as follows: Event Period Correction Incorrect: 2026.09.01 After Maintenance ~ 2026.0...
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Known Issues
9/1/2026
Notice regarding Group Boss Battle Event in Swamp of Destruction (FIXED Sep 8th)
Dear MUtizens, We have identified an issue where the Group Boss Battle Event in Swamp of Destruction cannot be entered. We are currently investigating the cause of the issue. Until a fix is applied, we kindly ask that you enter the Group Boss Battle in other maps. We sincerely apologize for ...
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Patch Note
9/1/2026
Patch Note - Sep 1st, 2026
Dear Mutizens, Please find the latest update details for MU Online on Sep 1st, 2026. ■ MU Online [Event Starting] 1. Season 21-1 3rd Update Event has started 2. Egg of Monster Event has started [Event Ending] 1. Season 21-1 2nd Update Event has ended [Patches & Bugfix] 1. Sanctuary of Aqui...
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Maintenance
8/28/2026
Scheduled Maintenance on Sep 1st, 2026 (03:00 ~ 09:00 UTC, event inventory reset)
Dear Mutizens, There will be scheduled maintenance performed on all servers on Sep 1st, 2026 (UTC). Please refer to the following maintenance details. - [Maintenance Schedule] 03:00 ~ 09:00 (UTC) - 6 hours - During the maintenance, event inventory is scheduled to be reset. Please use the i...
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Patch Note
8/25/2026
Patch Notes - Aug 25th, 2026
Dear Mutizens, Please find the latest update details for MU Online on Aug 25th, 2026. ■ MU Online [Events Starting] 1. Speed Server Plus has begun. (2026-08-25 ~ 2027-01-12) ※ Notice Regarding Speed Server Plus Content [CLICK] [Events Ending] 1. Speed Server Transfer has ended. We appreciate yo...
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Maintenance
8/24/2026
Scheduled Maintenance on Aug 25th, 2026
Dear Mutizens, There will be scheduled maintenance performed on all servers on Aug 25th, 2026 (UTC). Please refer to the following maintenance details. [Maintenance Schedule] 07:00 ~ 09:00 (UTC) - 2 hours Thank you, MU Online Team.
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Patch Note
8/18/2026
Patch Notes - Aug 18th, 2026
Dear Mutizens, Please find the latest update details for MU Online on Aug 18th, 2026. ■ MU Online [Event Ends] 1. Season 21-1 1st Update X Speed Server Event has ended 2. Eggs of Monster Event has ended Thank you. MU Support Team
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Maintenance
8/14/2026
Scheduled Maintenance on Aug 18th, 2026
Dear Mutizens, There will be scheduled maintenance performed on all servers on Aug18th, 2026 (UTC). Please refer to the following maintenance details. [Maintenance Schedule] 07:00 ~ 09:00 (UTC) - 2 hours Thank you, MU Online Team.
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Known Issues
8/12/2026
Notice regarding Goblin Point Roulette's 'Contract Stone of Fury'
Dear MUtizens, We have identified an issue in the Goblin Point Roulette where the reward 'Contract Stone of Fury x10' was being incorrectly issued as 'Contract Stone of Fury +1 x10', which prevented it from being registered for auto-buffs in the MU Helper. Resolution Details Fix Applied: - We h...
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Known Issues
8/12/2026
IMPORTANT: Dimensional Roulette Event Issue Regarding 200,000 Ruud Box (FIXED)
Dear MUtizens, We have identified an issue in the global MU Dimensional Roulette Event where users who obtained the 200,000 Ruud Box as a reward and opened it from their inventory did not receive the Ruud properly. Issue Resolution & Compensation Details - Compensation: A fix will be implemen...
