Windows 10: VPN Not Connecting

Discus and support VPN Not Connecting in Windows 10 Network and Sharing to solve the problem; My vpn while connecting gives error "The L2TP connection attempt failed because the security layer encountered a processing error during initial... Discussion in 'Windows 10 Network and Sharing' started by AzizUr Rehman1, Jun 11, 2020.

  1. AZIZUR REHMAN1
    AzizUr Rehman1 Win User

    VPN Not Connecting


    My vpn while connecting gives error

    "The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer"

    This error is mostly faces when user change its internet connection. VPN connect on one network but doesn't connect on another network.

    Kindly help me out i am very much worried due to this.

    :)
     
    AzizUr Rehman1, Jun 11, 2020
    #1
  2. KNOXX29
    Knoxx29 Win User

    Vpn ( trusted Vpn)

    Hi everyone.
    I am not an expert about Vpn and that's why I would like to know if someone could list me a few trusted Vpns, I would really appreciate any suggestion/ advice.

    Thanks.
     
    Knoxx29, Jun 11, 2020
    #2
  3. P4-630
    P4-630 Win User
    Vpn ( trusted Vpn)

    Tired of Germany blocking many youtube videos? *Big Grin VPN Not Connecting :D
     
    P4-630, Jun 11, 2020
    #3
  4. AJ99000
    aj99000 Win User

    VPN Not Connecting

    No Internet Connection When VPN Is Connected

    This particular issue has been going on for almost a month now. My companies IT department is still trying to figure out the root cause. Below is a list of isolation / troubleshooting i've done.

    Issue: Once connected to the work VPN (successfully) the internet connection on the Windows 10 machine disconnects and does not allow any network traffic.

    OS: Windows 10 Home - Version: 1909 (OS Build 18363.476)

    Computer: Razor Blade 2019

    - Latest drivers installed

    - Latest Windows updates installed

    - System Wide issue

    Troubleshooting / Isolation

    • Cellular Data: Verified the Windows machine can connect to a hotspot and successfully browse the internet. (No VPN involved)

    • Cellular Data + Work VPN: Verified the Windows machine can connect to the hotspot & successfully connect to work VPN and successfully browse the internet.

    • Home WiFi: Verified Windows machine can connect to the home wifi network and successfully browse the internet (No VPN involved)

    • Home WiFi + Work VPN: Verified Windows machine can connect to home WiFi. It can successfully connect to work VPN. However once the work VPN is connected, the home WiFi network indicates (No Internet Access)

    • Ping Test + Work VPN: Verified I can successfully ping (work) websites and even the work VPN URL successfully without any packet loss. However once I go to ping (non-work) related addresses like google.com, apple.com etc. there is packet loss.

    At this point I decided to test my work VPN on my iPhone & Apple Mac.

    • iPhone: Home WiFi + Work VPN: Verified the iPhone successfully connects to home WiFi network and the work VPN and can successfully browse the internet.

    • Mac: Home WiFi + Work VPN: Verified the Mac successfully connects to home WiFi network and the work VPN and can successfully browse the internet.

    Isolated: Only the Windows machine seems to be affected. I even verified this issue occurs on multiple Windows user accounts on the Windows 10 machine.

    - Windows 10 is fully updated to the latest November Windows 10 update and issue persists

    - Deleted and Added the VPN configuration several times and issue persisted.

    Third Party VPN Client Test: Tested with Nord VPN and the Windows machine successfully connected to the home WiFi network & the Nord VPN connection successfully connected to a random server and successfully browsed the internet.

    - Disabled IPV6 on VPN & WiFi network configuration (Per IT Support guidance) and issue persisted

    *Currently updating to Windows 10 Insider Preview 19033.1 (vb_release) to see if this might fix anything pertaining to Windows 10 VPN.

    Thanks for any additional guidance / suggestions / help that the community offers.
     
    aj99000, Jun 11, 2020
    #4
Thema:

VPN Not Connecting

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