🎮 Game Error Codes What it means & how to fix it

Genshin Impact Error Codes

Genshin Impact errors are mostly connection and login problems with HoYoverse's servers, plus a couple of download/version issues. Here's what each common code means and how to fix it.

Error codes

4201 Connection timed out / lost connection to server

Cause: Your connection to the Genshin servers dropped — unstable network or a server hiccup.

Fix:
  1. Restart your router; use a wired or stronger connection.
  2. Restart the game and log back in.
  3. Check the HoYoverse/Genshin server status.
31-4302 Login failed / verification error

Cause: A login-service or account-verification problem, often during maintenance or high load.

Fix:
  1. Wait and retry — usually server-side during maintenance.
  2. Log out and back into your HoYoverse account.
  3. Check the official maintenance notice.
9908 Data download / resource error at launch (9908, also 9107/9906/9006/9910)

Cause: The launcher couldn't download or verify game data — corrupted files or a busy CDN; HoYoverse groups these download-resource codes together.

Fix:
  1. Use the launcher's 'Game Resources' repair/redownload option.
  2. Re-launch the game; if it persists, uninstall the launcher and reinstall Genshin.
  3. Free up disk space and restart the router, then retry.
4206 Connection to server lost / version mismatch

Cause: A dropped connection or an out-of-date client after an update.

Fix:
  1. Update the game to the latest version.
  2. Restart the game and router.
  3. Check the server status for maintenance.
1041 Network/connection error

Cause: A general network problem reaching the servers, sometimes a firewall or VPN block.

Fix:
  1. Restart your router and flush DNS.
  2. Disable VPN/proxy and allow Genshin through the firewall.
  3. Switch networks to test (e.g. mobile hotspot).
10108 / 400 Login state expired / account logged in elsewhere

Cause: Your session expired or the account was signed in on another device.

Fix:
  1. Log back in — your session likely timed out.
  2. Sign out of other devices using the account.
  3. Reset your password if you didn't authorize the other login.
9203 Failed to download resource files / network error at launch

Cause: The launcher can't download or verify game data — usually your own network, an antivirus block, or a busy CDN.

Fix:
  1. Restart your PC — most users report this alone fixes 9203.
  2. Temporarily disable your antivirus while launching, then re-enable it.
  3. On PC, press Win+R, type %TEMP%, delete mhyprot2.Sys, and relaunch.
9907 / 9005 Insufficient storage space

Cause: Not enough free disk space, usually while downloading an update — the PC client can need ~80GB with headroom.

Fix:
  1. Free up disk space (aim for 30GB+ on mobile, 80GB+ on PC) and retry.
  2. Move the install to a larger drive, or use a device with more space.
  3. Clear the launcher's temp/cache files before re-downloading.
12-4301 Account authentication failed

Cause: A problem tied to your HoYoverse account rather than the network or files.

Fix:
  1. Log out and back into your HoYoverse account, then retry.
  2. If it persists, email Genshin customer service (genshin_cs@hoyoverse.com) with your UID and account email.
  3. Verify the account email/password and check for any account lock notice.
1-4308 An unknown error has occurred

Cause: A generic catch-all shown when the client can't classify the failure — often a transient server or session glitch.

Fix:
  1. Fully close and relaunch the game and launcher.
  2. Check the official server status / maintenance notice before retrying.
  3. Restart your router and log back in; if it keeps recurring, verify game files.

Fixes that work for most Genshin Impact errors

  1. Check the game's official server status page or its X/Twitter — if servers are down or under maintenance, no local fix will help; wait it out.
  2. Fully close and restart the game and its launcher (Steam / Epic / EA App / Battle.net / Riot Client).
  3. Restart your router and, on PC, flush DNS (open Command Prompt and run: ipconfig /flushdns).
  4. Verify or repair the game files in your launcher so a corrupted update is re-downloaded.
  5. Make sure the game and your OS are fully updated — most 'version mismatch' errors are an out-of-date client.

FAQ

How do I fix Genshin Impact error 4201?

4201 is a connection timeout to the server. Restart your router (use a wired or stronger connection), restart the game, and check the Genshin server status for maintenance or outages.

What does error 31-4302 mean in Genshin Impact?

31-4302 is a login/verification failure, usually during maintenance or high load. Wait and retry, log out and back into your HoYoverse account, and check the official maintenance notice.

What does Genshin Impact error 9203 mean?

9203 is a 'failed to download resource files / network error' at launch. Restart your PC (most users report this fixes it), temporarily disable antivirus, and on PC delete mhyprot2.Sys from your %TEMP% folder before relaunching.

How do I fix Genshin Impact error 12-4301?

12-4301 is an account authentication failure tied to your HoYoverse account. Log out and back in; if it persists, email genshin_cs@hoyoverse.com with your UID and account email.

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