Fixing Slow Internet on Windows

Slow internet on a Windows PC can disrupt work, streaming, and gaming. Luckily, most speed issues can be diagnosed and resolved with a few simple steps.

1. Check Your Internet Speed

• Use tools like Speedtest by Ookla, Fast.com, or Google Speed Test
• Compare your results with your internet plan’s advertised speeds
• If speeds are lower than expected, the issue may be device-specific or related to Windows settings

2. Restart Your PC and Router

• Restarting both your computer and router can fix temporary glitches
• Power down, wait 30–60 seconds, and turn devices back on

3. Update Windows

• Outdated Windows versions can cause slow internet
• Go to Settings > Update & Security > Windows Update and install all updates
• Updates improve performance, security, and compatibility

4. Disable Background Applications

• Some apps consume bandwidth silently:
  • Cloud storage (OneDrive, Google Drive)
  • Automatic Windows updates
  • Streaming or torrent apps

Solution:

• Close unnecessary apps during internet use
• Pause background downloads and syncing

5. Reset Network Settings

• Open Settings > Network & Internet > Status > Network reset
• Resets all network adapters and restores default settings
• Useful for persistent network issues

6. Disable Large Send Offload (LSO)

• LSO can slow down network performance on some Windows PCs
• Steps:
  • Go to Device Manager > Network adapters > Properties > Advanced tab
  • Disable Large Send Offload for both IPv4 and IPv6

7. Flush DNS Cache

• DNS issues can affect browsing speed
• Open Command Prompt as admin and run: ipconfig /flushdns
• Clears cached DNS entries and improves connectivity

8. Change DNS Servers

• Default DNS servers from your ISP may be slow
• Use faster alternatives like Google DNS (8.8.8.8 / 8.8.4.4) or Cloudflare (1.1.1.1)
• Steps:
  • Go to Network & Internet > Adapter settings > Properties > Internet Protocol Version 4 (TCP/IPv4)
  • Enter preferred and alternate DNS addresses

9. Disable Windows Auto-Tuning

• Windows TCP auto-tuning can sometimes affect speed
• Open Command Prompt as admin and run: netsh interface tcp set global autotuninglevel=disabled

10. Check for Malware or Viruses

• Malware can consume bandwidth or slow down your connection
• Use Windows Defender or trusted antivirus software to scan your system
• Remove any detected threats immediately

11. Update Network Drivers

• Outdated or corrupt drivers can reduce internet speed
• Steps:
  • Open Device Manager > Network adapters > Update driver
  • Download latest driver from the manufacturer if necessary

12. Use Ethernet for Critical Devices

• Wired connections offer more stable speeds than WiFi
• Ideal for gaming PCs or desktops streaming high-resolution content

Conclusion

Fixing slow internet on Windows requires a combination of system updates, network adjustments, and device optimization:

• Test speed and restart your PC/router
• Update Windows and network drivers
• Disable background apps, flush DNS, and optimize network settings
• Use wired connections for critical tasks

Following these steps ensures faster, stable, and reliable internet on your Windows PC, improving productivity and online experience.