Boost Internet Speed Instantly with 5 Powerful Command Prompt Tricks

 

Slow internet can be triggered by outdated configurations, IP conflicts, cache corruption, or ISP throttling. These five advanced Command Prompt commands form a hidden Windows optimization toolkit to restore and even supercharge your network performance—without installing extra software.

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Preparation – Run as Administrator​

Before executing these tweaks, open Command Prompt with admin rights:

1. Press Windows key → type cmd.
2. Right-click Command Prompt → select Run as administrator.
3. Confirm the prompt to enable elevated privileges.

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1. Renew IP Address​

Eliminate IP conflicts or DHCP lease issues that slow connections. Run:

✔ Forces a fresh connection handshake with the network.

✔ Resolves hidden miscommunication with the router.

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2. Flush DNS Resolver Cache​

A corrupted DNS cache means slower lookups. Reset instantly:

✔ Improves first-time site loading speed.

✔ Removes outdated or poisoned DNS entries.

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3. Reset Winsock​

Damaged network sockets or malicious LSPs can hijack or slow traffic. Fix it with:

✔ Restores original socket configuration.

✔ Essential after malware removal or network errors.

Restart your PC for changes to apply.

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4. Optimize TCP Settings with Netsh​

Fine-tune TCP/IP parameters for faster data transfer, lower latency, and smoother connections:

✔ Enables advanced data offloading to hardware.

✔ Improves large file downloads and streaming.

To revert any change, replace enabled with disabled.

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5. Stop ISP Video Throttling​

Block known throttling IP ranges to maintain streaming quality:

✔ Prevents intentional slowdowns during video playback.

✔ Useful for YouTube, Netflix, and other streaming platforms.

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Extra Pro Tips​

• Combine with router reboot for a total connection refresh.
• Update network drivers for compatibility with TCP enhancements.
• Test speeds before and after with speedtest.net to measure improvement.
• Use alongside Google DNS (8.8.8.8 / 8.8.4.4) or Cloudflare DNS (1.1.1.1) for better routing.

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These administrator-level Command Prompt commands solve most unexplained internet slowdowns, site loading delays, and video buffering. Run them periodically to keep your network operating at peak performance.