If Escape from Tarkov is showing an error like:

• “POST Error 0”
• “Error on POST request”
• “Backend Error”
• “Failed to load POST data”
• “POST request failed error 0”
• Game stuck on loading or login screen

—you’re not alone. This issue commonly happens when the launcher fails to send or receive data from Tarkov servers.

These errors are usually caused by unstable internet, blocked launcher files, broken cache, corrupted game installation, incorrect date/time, or temporary EFT server outages.

This guide will help you fix every common POST Error 0 issue.

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⚙️ Common Causes of POST Error 0 in Escape from Tarkov

• Corrupted BSG Launcher cache
• Unstable or slow internet connection
• DNS problems
• Antivirus or firewall blocking POST requests
• Incorrect Windows date & time
• Damaged game files
• VPN/proxy interference
• Temporary Tarkov server issues
• Damaged launcher installation

Let’s fix it step-by-step.

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🧰 Fix 1: Clear Tarkov Launcher Cache (Most Effective)

POST Error 0 commonly appears due to corrupt cache.

Steps:

1. Open BSG Launcher
2. Click Settings
3. Select Clear Cache
4. Restart launcher

If launcher won’t open:

Delete manually:

C:\Battlestate Games\EFT\Launcher\Cache
C:\Users\YourName\AppData\Local\Battlestate Games

✅ Result: Fixes 70% of POST request failures.

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🌐 Fix 2: Use Google DNS (Fixes POST Network Errors)

1. Open Control Panel > Network & Internet > Network Adapter
2. Right-click your active connection → Properties
3. Click Internet Protocol Version 4 (IPv4)
4. Select Use the following DNS servers
5. Enter:

8.8.8.8
8.8.4.4

Restart PC.

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🔐 Fix 3: Disable VPN, Proxy & DNS Changers

POST requests break when:

• Proton VPN
• Cloudflare WARP
• ExitLag
• Mudfish
• Proxy apps

are running.

Turn everything off → restart launcher.

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🔥 Fix 4: Disable Firewall / Antivirus Blocking

Security apps often block the launcher from sending POST requests.

Disable temporarily:

• Windows Defender
• Avast
• AVG
• Kaspersky
• Bitdefender

Then add exceptions:

BsgLauncher.exe
EscapeFromTarkov.exe

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⏰ Fix 5: Sync Windows Date & Time (Critical Fix)

Wrong time breaks TLS/HTTPS POST requests.

1. Windows Search → Date & Time
2. Turn ON:
   • Set time automatically
   • Set time zone automatically
3. Click Sync Now

Restart launcher.

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🔄 Fix 6: Restart Router + Flush DNS

Internet routing problems can cause POST Error 0.

1) Restart Router
Unplug for 10 seconds, plug back in.

2) Flush DNS

Open Command Prompt (Admin) → run:

ipconfig /flushdns
ipconfig /release
ipconfig /renew

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🧩 Fix 7: Repair Game Files Using Launcher

1. Open Battlestate Launcher
2. Go to Game
3. Click Integrity Check
4. Let it repair files

This fixes corrupted networking components inside the game.

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🧰 Fix 8: Reinstall the BSG Launcher

POST error often comes from a broken launcher.

Steps:

1. Uninstall Battlestate Launcher
2. Delete leftover folders:

C:\Battlestate Games
C:\Users\YourName\AppData\Local\Battlestate Games

3. Download latest launcher from official website
4. Install as admin

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🚫 Fix 9: Close Background Apps That Interfere

Close apps like:

• Cloudflare WARP
• Steam
• Epic Launcher
• Faceit Anti-Cheat
• Vanguard
• OperaGX
• PiHole DNS
• NetLimiter

Task Manager → End Task

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🧱 Fix 10: Check If EFT Servers Are Down

POST errors spike during server maintenance.

Search:
“Escape from Tarkov server status”

If servers are unstable → error will resolve automatically.

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💾 Fix 11: Connect With Mobile Hotspot (Diagnosis Step)

If Tarkov loads normally with mobile data:

➡ Your home WiFi or ISP is blocking POST requests
➡ Use DNS fix or contact ISP

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🧩 Fix 12: Reinstall the Game (Last Option)

If nothing helps:

1. Uninstall game
2. Delete all leftover folders
3. Reinstall on an SSD

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❓ FAQs

Q1: Why does Escape from Tarkov show “POST Error 0”?

Because the launcher cannot send required POST requests to the backend server due to network, cache, or firewall issues.

Q2: Can server maintenance cause this?

Yes — server downtime often triggers POST errors.

Q3: Does reinstalling the launcher fix POST Error 0?

In many cases, yes — especially when cache or launcher dependencies are corrupted.

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🎯 Conclusion

To fix Escape from Tarkov POST Error 0, start by clearing the launcher cache, changing DNS, syncing date/time, and disabling VPN or antivirus. These steps resolve most POST request failures.

If the issue continues, repair the game, reinstall the Battlestate launcher, or wait for server stabilization.