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Dell Inspiron 5000: L2TP VPN Connection Issue over WiFi on Windows 10 - Troubleshooting Help

olo_22 7470 7
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  • #1 17018482
    olo_22
    Level 2  
    Hello,

    I have a VPN set up for a company on Windows 10. The VPN is based on the l2tp protocol.
    It does not connect through the WIFI connection, but if I connect the same laptop with a cable, the VPN works.
    My computer is a dell inspirion 5000 series.

    I think I've tried everything.

    Thank you in advance for your help
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  • #2 17018648
    myszkoscielna
    Level 23  
    Try to turn off the laptop's firewall when you are on WIFI.
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  • #3 17018783
    olo_22
    Level 2  
    Disabling the firewall and anti-virus does not help.
  • #4 17018903
    dedito
    Level 39  
    What is this wifi card, what drivers, some additional software for it?
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  • #5 17019051
    olo_22
    Level 2  
    The card is QUALCOMM QCA9977.

    I also bought an external wifi usb tplink card. And it is also impossible to connect to a VPN.
  • Helpful post
    #6 17019059
    jprzedworski
    Network and Internet specialist  
    Check to see if you have any Dell-installed applications with the name SmartBytes or Killer Wireless Suite in them - this is an add-on for Wi-Fi cards. Uninstall.
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  • #7 17019075
    myszkoscielna
    Level 23  
    SPTry before establishing VPN connection after WIFI, reset the router (disable / enable)
  • #8 17019139
    olo_22
    Level 2  
    SmartBytes - uninstalled. And it worked

    thanks for the help.
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Topic summary

The discussion revolves around a Dell Inspiron 5000 series laptop experiencing issues connecting to an L2TP VPN over WiFi on Windows 10, while a wired connection works without problems. Initial troubleshooting steps included disabling the firewall and antivirus, which did not resolve the issue. The user identified the WiFi card as QUALCOMM QCA9977 and mentioned that an external TP-Link USB WiFi card also failed to connect to the VPN. A key solution was found by uninstalling the Dell application SmartBytes, which allowed the VPN connection to succeed over WiFi.
Summary generated by the language model.
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