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Reset your Windows TCP settings (recommended for IllusionCloud DDoS-filtered game servers)

If you’ve ever used “ping boosters”, “FPS network tweaks”, random YouTube guides, or tools like TCPOptimizer, there’s a good chance your Windows TCP stack was changed in ways that sound helpful but actually make connections less compatible with protected game servers.

IllusionCloud’s DDoS filtering (and many game server network stacks) expects standard, widely-supported TCP behavior. When “optimizers” enable or force niche/experimental options, your connection may present TCP behaviors/options the server (or the protection layer in front of it) doesn’t support, which can lead to:

  • stuck on “Connecting…”

  • frequent disconnects / timeouts

  • unstable ping / weird packet loss patterns

  • connections that work without protection but fail when DDoS filtering is enabled

This is exactly what the provided batch script is for: it pushes advanced TCP tuning back toward Windows defaults so your client only uses options that are broadly supported and less likely to conflict with protected game servers.

What this script does

The batch file resets a set of global TCP parameters back to safe/default behavior and removes risky tweaks commonly applied by “optimizers”. In simple terms:

  • It undoes aggressive TCP tweaks that can break compatibility.

  • It returns Windows TCP behavior to normal/default-style operation.

  • It helps ensure your connection uses supported TCP options when connecting through DDoS filtering.

It also checks that you ran it with Administrator permissions (required), otherwise it will stop and tell you to re-run as admin.

How to use it (Windows 10 / 11)

  1. Download the .bat file from our documentation.

  2. Right-click → “Run as administrator”

  3. Read the notice, then press any key to continue.

  4. When it finishes, restart Windows (important so the stack applies cleanly).

After rebooting, try connecting to your game server again.

Troubleshooting: “The .bat didn’t work” / settings won’t change

If the script doesn’t seem to help, or you get inconsistent results, the most common cause is TCPOptimizer (or similar tools) still forcing settings.

If you previously used TCPOptimizer:

  1. Open TCPOptimizer

  2. Choose Windows Default / Reset to default (wording varies by version)

  3. Apply the defaults

  4. Restart Windows

  5. Run the batch script again (as Administrator), then restart once more if requested

This clears any optimizer-enforced configuration so Windows can return to normal behavior.

Important notes

  • This does not “boost” your internet. It’s a compatibility fix.

  • The changes are system-wide (affect all apps), but they’re aimed at returning to normal Windows behavior, not adding risky tweaks.

  • If you’re not having connection issues, you don’t need to run this.

Still having issues?

If you still can’t connect after resetting to defaults, the cause is likely outside client TCP tuning (ISP routing, firewall/AV interference, local packet loss, or an unrelated server-side issue). In that case, contact IllusionCloud support with:

  • your Windows version

  • whether you used TCPOptimizer/other “optimizers”

  • what exactly happens when you connect (timeout, instant disconnect, stuck connecting)

Source (script referenced in this FAQ): https://cdn.illusioncloud.biz/Reset%20TCP%20stack.bat

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