AION 2 Common Errors and How to Fix Them
Fixes for the AION 2 errors hitting launch day: stuck on loading, can't log in, temporary error, error code 1000, black screen and crashes.
FAQ
Is AION 2 down right now?
What does Error Code 1000 mean in AION 2?
How do I fix "cannot connect to login server" in AION 2?
Why do I get "DirectX 12 is not supported on your system"?
Why does AION 2 crash or show a black screen?
What is the difference between an AION 2 queue and an error?
The most common aion 2 error on launch day is not a broken install — it is the server refusing a login, and the two look identical until you know which side produced them. The global launch on October 5, 2026 behaved exactly as the release date and launch time guide predicted: an eight-hour scheduled maintenance with login unavailable, then queues and login errors in the first hours after the doors opened. Read the two sides apart first, then repair only your own machine.
What AION 2 launch day actually looked like
The downtime was announced, scheduled and on time. NCSOFT’s maintenance notice, titled “Scheduled Maintenance Sun Oct 4 / Mon Oct 5” and posted to the official Steam feed, states that game login would be “temporarily unavailable” for 8 hours from October 4 at 22:00 PDT (October 5 at 07:00 CEST), lists game servers as the affected service, and warns that players would be disconnected once maintenance began. The same notice carried the Advanced Access to commercial launch switch plus quality-of-life changes: the character deletion wait shortened from 168 hours to 24 hours and the minimum level dropped from Level 10 to Level 1, the idle redirect to the server selection screen stretched from 30 minutes to 3 hours, and boss stats adjusted.
The doors opened on schedule. The feed carries “AION 2 Will Launch On Time” at 12:48 UTC on October 5 and “Launch Into AION 2 Now!” at 13:00 UTC. Population followed immediately — “Thank you for 400.000 Active Players” at 14:04 UTC with a bound gift, and a second bound gift, a Customization Voucher, at 19:02 UTC. SteamDB’s own post in the same feed records a peak of 397,905 concurrent players on October 5.
As of October 6, 2026 there is no outage notice. Nothing on the official Steam feed since launch announces a hot fix, an extension or an emergency window; the most recent official posts are the two thank-you gifts and a giveaway. Steam’s player-count API returned 257,391 concurrent players at 02:39 UTC on October 6. The server status and maintenance page tracks the notice history; the server population page covers what a full world looks like from the inside.
Server-side causes: the login refused you
These four produce an error that no amount of local repair will fix, and three of them are on the record for launch day.
| Cause | What it looks like | What is actually on the record |
|---|---|---|
| Scheduled maintenance | Login unavailable, client cannot reach the world list, kicked at the start of the window | The October 5 window ran the full 8 hours and closed at the published 13:00 UTC launch time |
| Capacity / full world | Queue with a position number, or “servers are full” at character select | 400,000 active users reported by NCSOFT hours after launch. NC’s launch-week notice advised players queued on a full server to create a character on a recommended server instead — transfers did not open until October 14 |
| Regional or storefront mismatch | Login fails, or characters are missing at character select | Entitlement is tied to the storefront: Steam accounts play on Steam, PURPLE accounts on PURPLE. The server list and regions page covers the roster |
| Stale Playtest build still installed | Grey Play button, or an old build refusing new servers | NC’s September 19 scale-test closing post requires removing the separate Playtest app (AppID 4972320) before the retail client; the Advance Access guide has the step |
A queue is the healthy shape: the server is up and full. An error with no queue and no world list is the unhealthy shape. That single distinction decides whether you repair your PC or wait.
Local-side causes: five checks before you reinstall
Everything on this side is reversible and cheap. Do them in order, because each one invalidates the next if you skip it.
- Verify the game files. Steam: right-click AION 2 → Properties → Installed Files → Verify integrity. The launch patch was large, and an interrupted pre-download is the most common source of a client that updates and then fails to start. Full pre-download mechanics are on the preload and download page.
- Clear the launcher cache and restart the client completely. Exit the launcher from the tray, not by closing the window, then relaunch and log in again — the same discipline Steam itself requires when it has not reloaded an update.
- Update the graphics driver. AION 2 runs on Unreal Engine 5 and Steam lists DirectX Version 12 in both requirement tiers, so the driver is load-bearing. The official tier targets are on the PC system requirements page.
- Check your region selector. Picking a world or region you cannot actually log into produces a login error that looks identical to an outage.
- Free disk space. The official sheet asks for 100 GB available space and marks an SSD recommended. A drive that fills mid-patch produces update loops that read exactly like a “temporary error”.
Reinstalling is the last step, not the first. Nothing on this list requires it.
AION 2 error message, cause and fix
| What you see | Most likely cause | What to do |
|---|---|---|
| Launcher stuck on “Loading” or “Preparing” | Update still unpacking, or a stalled patch from an interrupted download | Let it finish. If it holds past a few minutes, verify files, then kill the launcher from the tray so no stale process holds a lock, and reopen it |
| “Cannot connect to login server” / “Unable to connect to login server” | Server-side refusal — maintenance, capacity, or a region/storefront mismatch | Look for a notice naming your world on the Steam feed; confirm the storefront you bought on; then try another world. With no notice and no queue, treat it as local or routing and continue down the local list |
| “A temporary error has occurred. Please try again later.” | Auth service rejecting the session; player reports attach the code 40309:500 to it, which NC has never defined | Retry on a schedule rather than in a loop, and confirm free disk space and verified files first. Note whether it hits during maintenance, at login, or inside a busy world — that context separates a server refusal from a client fault |
| “Please Try Again Later” in the chat box | An official known issue, listed by NCSOFT and resolved by changing character, passing through a loading screen, or logging back in | Do exactly that. This is a chat-layer bug with an NC-published workaround, not a login failure |
| “Payment failed… Please try again later. (Error code: 1000)” | Unconfirmed. The code appears in the PURPLE checkout; one community answer attributes it to a non-served payment region | Identify the screen first. At payment it is a payment-region or payment-method problem, not a server fault — reinstalling will not clear it |
| “DirectX 12 is not supported on your system. Try running without the -dx12 or -d3d12 command line argument.” | A DX12 capability check the client rejects. Steam requires DX12 in both tiers, with no documented DX11 path | Update the driver and relaunch; leave launch options empty. NC has posted no fix, so any DX11 workaround is unconfirmed until documented |
| Brief black screen, then the game closes or never appears | Unconfirmed. A black screen before crashing is reported by some players, but NC attributes it to nothing | Verify files, update the driver, drop the graphics preset, and disable overlays. NC’s own sheet asks for Very Low at 1080p on minimum hardware |
| “UE-AION2: Fatal Error” or “Game has crashed and will close” | Engine-level crash with no published root cause | Capture the full log, verify files, update drivers, and post it in the official Discord bug channel listed on the Discord and communities page |
| Unhandled Exception: EXCEPTION_ACCESS_VIOLATION, or crashing every one to two hours | No official root cause. Posted logs show the exception inside AION2.exe with VCRUNTIME140.dll in the stack | Same order as above. Note this was posted from a Ryzen 7 9800X3D with an RTX 5070 Ti, so high-end hardware does not exclude it — the crash is not simply a low-spec problem |
Error codes NCSOFT has not explained
There is no published code table, so any confident mapping you find is someone’s guess. NC’s
AION 2 Global support FAQ points you at the right procedure instead: its block-code entry at
help.plaync.com/faq/aion2global?faqNo=7154, dated September 10, 2026, tells you to search the
code on screen, apply the listed solution, and submit an inquiry if that does not resolve it.
| Code | Status | How to check |
|---|---|---|
| 1000 | Unconfirmed — no NC definition; appears attached to a payment failure in the PURPLE checkout | Confirm you are on the payment screen, not the login screen. Payment-region problems do not clear through file verification or reinstall |
| 40309:500 (after “a temporary error has occurred”) | Unconfirmed — the string is player-reported; the suffix is not explained by NC | Record whether it appears during maintenance, at login, or in a busy world, and include that context with any support ticket |
| Any code on the “block code” pop-up | Officially supported | Follow NC’s own procedure: search the code on the block-code page, apply the listed fix, then submit an inquiry |
Sources and verification
- NCSOFT official notice, “Scheduled Maintenance Sun Oct 4 / Mon Oct 5”, posted October 4, 2026 — window, 8-hour duration, “login will be temporarily unavailable”, affected service and patch list
- Steam news API, AppID 3393110, read October 6, 2026 — post titles and timestamps: launch on time 12:48 UTC, launch live 13:00 UTC, 400,000 active players 14:04 UTC, Customization Voucher 19:02 UTC, giveaway 19:13 UTC, all on October 5
- Steam news API, AppID 3393110, same day — NCSOFT “Advanced Access Known Issues (Updated: 10/4)” with the chat “Please Try Again Later” workaround, and “Information on server transfer” advising queued players to use a recommended server
- Steam Web API player count, AppID 3393110, queried October 6, 2026 at 02:39 UTC — 257,391 concurrent
- Steam store API, AppID 3393110, same day — release date October 5, 2026; “PC only, on Unreal Engine 5”; DirectX Version 12 in both tiers; 100 GB available space, SSD recommended; Very Low preset at FHD on minimum hardware
- NC support FAQ,
help.plaync.com/faq/aion2global?faqNo=7154, dated September 10, 2026 — the block-code lookup procedure - Steam community discussions, AppID 3393110, read October 6, 2026 — the DirectX 12 launch thread with four comments and no official reply, and two crash threads carrying EXCEPTION_ACCESS_VIOLATION with VCRUNTIME140.dll and AION2.exe in the stack, one posted October 3 from a 9800X3D / RTX 5070 Ti system
- Steam news API, AppID 4972320, read October 6, 2026 — the September scale-test notices, including the Playtest app removal step
- Reddit r/Aion2 and public forum posts, read October 6, 2026 — the exact Error 1000 payment string and the 40309:500 suffix, both community-reported and labelled as such
Evidence level: Mixed, labelled per row. Maintenance timing, launch timing, player counts, engine and DirectX 12 requirement, and the block-code procedure come from NCSOFT, the Steam feed, the Steam Web API or the NC support FAQ. Error strings and crash logs are player-posted and marked as observed. Every numeric error-code meaning on this page is marked unconfirmed because NC has published none.
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