Genshin Impact: Network Error 31-4302 / 4206 - Solution

⚠️ SAFETY WARNING. Incorrect intervention on this device can lead to unforeseen risks or void the warranty. It is recommended not to proceed without adequate technical skills. Before any internal hardware intervention (such as SSD replacement), always disconnect the PC from the power supply and discharge static electricity. ReeFix provides this diagnosis EXCLUSIVELY for educational and informational purposes.

IF Error 31-4302 or combination 31-4302 and 4206

This scenario occurs with a high probability (approximately 45% for file corruption, which can also be triggered by network issues) when the game's protection system (anti-cheat) or the client verification module detects inconsistencies in local files. A network problem (error 4206) can often cause incomplete or corrupted file downloads, leading to error 31-4302.

Key signs/indicators:

• The game crashes immediately on startup or during the initial loading screen with the HoYoverse logo.
• Sudden appearance of the error after a game or operating system update.

Quick checks (DIY):

1. Verify game file integrity: Launch the Genshin Impact launcher and use the built-in repair function to scan and re-download any missing or corrupted packages. If the error persists, navigate to the Genshin Impact Game\GenshinImpact_Data installation folder, delete the Plugins folder, and restart the repair from the launcher. This resolves most cases of error 31-4302.
2. Firewall/Antivirus check: Temporarily disable Windows Firewall and antivirus (only for a single test launch) or add the Genshin Impact installation folder and the GenshinImpact.exe executable to exceptions. Overzealous security software can block the anti-cheat driver or game files.
   • Security notes: Disabling antivirus or firewall exposes the system to risks. Perform this check only for the strictly necessary time and immediately reactivate protections.
3. Temporary file cleanup: Remove any extraneous or orphaned temporary files from the game's installation directory, particularly in the Genshin Impact Game folder.

Typical user error: Users often neglect to use the built-in repair tool in the launcher, jumping to more complex solutions when the problem is simple file corruption.

IF Error 4206 persists (or is the primary symptom)

This error (35% probability) indicates a network timeout, meaning the client fails to establish or maintain a connection with the game servers within a time limit. If file corruption checks have not resolved the issue, the problem is likely at the network level.

Key signs/indicators:

• The game starts correctly but fails to connect at the login screen ("Unable to connect to server").
• General web browsing and other online services work regularly.
• The error occurs intermittently, especially during peak home network usage.

Quick checks (DIY):

1. Reset network stack and DNS cache: Open Command Prompt as administrator and run:
   • ipconfig /flushdns (to clear DNS cache)
   • netsh winsock reset
   • netsh int ip reset Restart your PC after these commands. This can resolve addressing or name resolution conflicts.
2. Public DNS configuration: Temporarily change the DNS servers on your network adapter (or on the router, if you know how) to Cloudflare's (Primary: 1.1.1.1, Secondary: 1.0.0.1) or Google's (Primary: 8.8.8.8, Secondary: 8.8.4.4). Your ISP's DNS might not update HoYoverse server records promptly.
3. Alternative connection test: Try launching the game by connecting your PC to a different network, for example, via a mobile hotspot from your smartphone. This helps isolate whether the problem lies with your home network or your Internet Service Provider's (ISP) routing.
   • Explain the "why": Outdated DNS or inefficient routing by the ISP are common causes of timeouts, as they prevent the client from locating the correct IP address of the game servers.

Counter-examples: If general web browsing or other online services are also slow or not working, the problem is broader and likely related to your general internet connection or router.

THEN:

Repair yourself:

• If the quick checks (file integrity, public DNS, network stack reset, firewall/antivirus exclusion) resolve the problem, the intervention was successful. The cost is zero.
• The difficulty of the intervention is estimated as Medium (⭐⭐), manageable with care by following the instructions.

Contact a technician:

• If, after performing all quick checks, errors 31-4302 and/or 4206 persist, it is advisable to contact an IT professional or network technician.
• Output for technician: "The Genshin Impact game client systematically shows error 31-4302 (file integrity) and 4206 (network timeout). I have already attempted file verification via the launcher, TCP/IP stack reset, DNS flush, and public DNS configuration, as well as excluding conflicts with firewall/antivirus. An in-depth diagnosis of the storage unit's status (S.M.A.R.T.), an analysis of routing to HoYoverse servers, and verification of packet loss on the line are requested. Possible hardware degradation (SSD or router) or ISP issue."
• Estimated costs: Professional diagnosis can range from 40 to 80 euros. Any advanced reconfiguration or software cleaning interventions can add 30 to 60 euros.

Replace the relevant device component:

• If the technician's diagnosis reveals significant hardware degradation (e.g., damaged sectors on the SSD unit causing repeated file corruption, or an outdated/defective Wi-Fi router generating constant packet loss), it might be more cost-effective to replace the specific component rather than attempting complex repairs.
• Estimated costs (parts + labor):
  • Replacement [Internal NVMe SSD Samsung 990 Pro]: 100-250 euros (part) + 50-100 euros (labor and system/game reinstallation).

If you use this specific drive, be aware that early batches suffered from a firmware bug that caused abnormal and rapid degradation of the health percentage in S.M.A.R.T. data. We recommend checking the disk status with Samsung Magician and immediately updating the firmware to stop premature wear of memory cells.

*   Replacement [Wi-Fi 6 Router ASUS RT-AX58U]: 80-200 euros (part) + 30-70 euros (labor for configuration).
*   Replacement [Ethernet Cable Cat 8 Ugreen]: 10-30 euros (part) + 10-20 euros (labor, if necessary).

• When diagnosis can fail: If the problem is exclusively with the ISP's infrastructure (e.g., degraded line, regional congestion), replacing local components might not fully resolve it.

CONCLUSION

The overall assessment indicates that the most probable cause (approximately 85%) of errors 31-4302 and 4206 in Genshin Impact stems from a combination of local configuration file corruption and instability in DNS resolution or network routing to the game servers.

1. Repair yourself: Always start with verifying file integrity via the game launcher (and eventual removal of the Plugins folder) and configuring public DNS servers (Cloudflare/Google). These actions resolve most cases (70-80%) and are free of charge, with medium difficulty. If the problem persists, try temporarily disabling firewall/antivirus.
2. Contact a technician: If quick checks do not resolve the problem, especially in the presence of persistent 4206 errors, professional network and PC hardware analysis is advisable.
3. Replace the relevant component: Replacing the storage unit (SSD) or Wi-Fi router is a last resort (5% probability) and is recommended only if an in-depth technical diagnosis reveals a specific hardware failure that cannot be resolved otherwise.

If quick checks resolve the problem -> you can continue playing; otherwise, if it persists -> contact a technician for a more in-depth hardware and network diagnosis.