my internet speed is slow

devoppscurious

my internet speed is slow but its not a prb from wifi and isp but in my pc.
is the VPN which is discconected now was the prb?

RajeshKumar1

Yes, a VPN (Virtual Private Network) could have been the issue, even if it is currently disconnected. Here's why:

VPN Settings or Software Issues: Sometimes, even if the VPN is disconnected, the VPN software might still be running in the background, altering network settings or adding extra overhead that slows down your connection.
DNS Settings: Many VPNs change your DNS server settings when connected. If those settings remain altered after the VPN disconnects, it can cause slower internet speeds or connection issues.
Firewall or Antivirus Integration: Some VPNs integrate with firewalls or antivirus programs, which can continue to filter or restrict traffic even after the VPN disconnects.
Network Adapters: Some VPNs install virtual network adapters or drivers, which may interfere with your default internet settings.

How to Fix It

To ensure your PC's internet speed is not being affected by the VPN:

Restart Your PC: A restart often resets any temporary configurations left behind by the VPN.

Check Network Settings:

Open your network settings and confirm the correct DNS settings are being used (e.g., set it to "Obtain DNS server address automatically").

Reset your network stack using these commands in the Command Prompt (as Administrator):

     netsh int ip reset
     netsh winsock reset
     ipconfig /flushdns

Uninstall the VPN: If the VPN software is no longer in use, consider uninstalling it to rule out interference.
Update Network Drivers: Ensure your network drivers are up to date.
Speed Test: Perform a speed test before and after troubleshooting to verify improvements.

If the VPN is essential, you may want to test a different VPN provider to see if it performs better.

EmilyBhat

Yes, a VPN that is currently disconnected can still be the cause of slow internet on your PC. VPN software often leaves behind changed DNS settings, proxy settings, virtual network adapters, or background processes that continue to affect your connection even after the VPN is turned off.

Start with these checks:

1. Make sure the VPN is fully closed
Check the system tray and Task Manager. Look for the VPN app or any related background services such as vpnagent, openvpn, wireguard, or similar. End those processes and test again.

2. Check proxy settings
Open Windows Settings > Network & Internet > Proxy. Make sure Use a proxy server is turned off unless you specifically need it. VPNs sometimes enable a proxy and do not always disable it cleanly.

3. Check DNS settings
Go to your active network adapter, open Properties, select Internet Protocol Version 4, and set DNS to Obtain DNS server address automatically. If you want to test, you can temporarily set DNS manually to a public resolver, but automatic is fine for most cases.

4. Flush and reset network settings
Open Command Prompt as Administrator and run these one by one:

ipconfig /flushdns
ipconfig /release
ipconfig /renew
netsh int ip reset
netsh winsock reset

Restart the PC after running the last two.

5. Disable leftover VPN network adapters
Press Win + R, type ncpa.cpl, and press Enter. Look for virtual adapters with names like TAP, TUN, VPN, or the VPN product name. Right-click and choose Disable if you are not using them. Do not disable your main Ethernet or Wi-Fi adapter.

6. Check the VPN kill switch
Some VPN apps have a kill switch or network lock feature. If it was left enabled when the VPN disconnected, it can block or throttle traffic even after disconnecting. Open the VPN settings and make sure any kill switch, network lock, or always-on VPN option is turned off.

After these steps, run a speed test again. If the speed improves, the VPN was indeed the cause.