AION 2 Patch Notes — September 23, 2026 (Emergency Maintenance)
A 90-minute evening maintenance on the day of the regular September 23 update, walking back part of its Abyss change. The proportion of PvP damage amplification that Abyss and Spacetime Rift Domination Monoliths and guards now take into account is lowered, Abyss boss and Dimensional Core HP is raised again, and the 'Decline of Power' debuff on Middle and Lower Abyss bosses kicks in at 8 minutes instead of 10. A Special Daeva Supply Chest was paid as compensation. Translated from the official Korean notice.
Last updated: September 23, 2026
Maintenance window
An evening maintenance on the same day as the regular Wednesday update, walking back part of that update's Abyss change.
| Date and time | September 23, 2026 (Wed), 17:30 – 19:00 KST (1 hour 30 minutes) |
| Impact | The game cannot be played for the duration. |
Maintenance contents
The regular September 23 update had started applying a set proportion of the PvP damage amplification stat to Abyss and Domination Monoliths and guards, with a slight raise to boss and Core HP to match. This maintenance tones the first down and pushes the second further:
- The proportion of the PvP damage amplification stat applied to the Monoliths and guards in every Abyss region and in the Spacetime Rift Domination is lowered.
- The HP of Abyss region bosses and the Dimensional Core is raised.
- The start time of the 'Decline of Power' debuff on Middle / Lower Abyss bosses changes from 10 minutes to 8 minutes.
The note gives no figures for either the new ratio or the HP raise.
Compensation
Claimable from September 23 (Wed) 19:30 to September 24 (Thu) 19:30: 1× Special Daeva Supply Chest (Rare) (Soul-bound), usable until November 4, 2026 at 05:00. Rewards not claimed within the window are lost and are not reissued.
| Contents | Qty | Expiry |
|---|---|---|
| Life Crystal (Soul-bound) | 3 | — |
| Resurrection Spiritstone (Soul-bound) | 2 | — |
| Battle Enhance Scroll (Soul-bound) | 3 | — |
| Small Odyle Energy (Soul-bound) | 2 | Deleted November 4, 2026 at 05:00 |
Official sources
Frequently asked questions
Why was there a second AION 2 maintenance on September 23, 2026?
The regular September 23 update began applying a proportion of the PvP damage amplification stat to Monoliths and guards in the Abyss and the Spacetime Rift Domination. The same evening, a 90-minute emergency maintenance from 17:30 to 19:00 KST lowered that proportion, raised Abyss boss and Dimensional Core HP, and brought the boss 'Decline of Power' debuff forward from 10 to 8 minutes.
When does the Abyss boss debuff start after September 23, 2026?
The 'Decline of Power' debuff on Middle and Lower Abyss bosses now starts 8 minutes into the fight rather than 10. The ten-minute mark matches the boss damage ramp introduced on September 3 to ease fights that were dragging on.
What was the compensation for the September 23 emergency maintenance?
One Special Daeva Supply Chest (Rare), claimable from 19:30 on September 23 to 19:30 on September 24 and usable until November 4, 2026. It holds 3 Life Crystals, 2 Resurrection Spiritstones, 3 Battle Enhance Scrolls and 2 Small Odyle Energy, all Soul-bound.