Windows 10: Defender cuts off my internet completely

Discus and support Defender cuts off my internet completely in Windows 10 Software and Apps to solve the problem; Windows 11 Pro, updated fully.So, I go to a coffee shop, connect to the public wifi.After a few minutes, Defender permits me to turn on the VPN.I start... Discussion in 'Windows 10 Software and Apps' started by IainMcCracken, Sep 25, 2024.

  1. Defender cuts off my internet completely


    Windows 11 Pro, updated fully.So, I go to a coffee shop, connect to the public wifi.After a few minutes, Defender permits me to turn on the VPN.I start using the internet. In less than half an hour, I am throttled to zero. That means no bytes are getting through. I cannot even ping google.com. I cannot even ping a site I haven't been to for a while because the DNS lookup fails.The privacy tile says I have 48Gb of data left before throttling starts.So, I turn the VPN off and WHOOOOOOOOOOOOOOOOOOOOOOOOOOOOOSH!!!!!!! I have internet access again, at the full speed of the wifi provided there. 5Mb

    :)
     
    IainMcCracken, Sep 25, 2024
    #1
  2. 3Colors Win User

    Windows Updated(16299.309).KB4088776 Restart is required to complete.

    Hi dalchina. Good news, I followed your suggestion and reinstalled the update and now it appears as "installed correctly" *Biggrin Maybe it was not necessary to run the Windows Update Troubleshooter or maybe if necessary. But using it I do not think it could have worsened something. The installation was very fast, unlike the first time it showed step 1 and step 2 completed.

    Thanks for the suggestions and for the time to respond Defender cuts off my internet completely :) Best regards.


    And thanks for the tip of that program, I'll have it on my list.
     
    3Colors, Sep 25, 2024
    #2
  3. jcaswell Win User
    W10 can connect to wider internet but cannot access web pages

    I have an odd issue with my W10 laptop linked to Sky broadband in the UK via wifi using a Sky router. The effect is that while I can actually access the internet (I can send and receive emails using Outlook and can connect to other machines using TeamViewer) I cannot access any web site (Google, BBC etc). There is no specific error message, merely that the access request timed out and a suggestion that it may be to do with proxy. I have tried the following:
    1. Other systems (W10 and ios) can access web sites using the same Sky router (therefore probably not a router problem)
    2. I have sent and received emails using Outlook, so the broadband connection is working (probably not a Sky problem)
    3. I have tried two different browsers (Firefox and Edge), no connection (not a browser problem)
    4. I am using Windows Defender and have:
      1. Made sure that Firefox is in the list of allowed systems in its Firewall, no connection after a reboot
      2. Turned off the Firewall and tried again - no connection
    My next step will be to re-install Windows, but has anyone got any other suggestions? Could it be some sort of virus (I have carried out a complete virus check using Defender) So - any suggestions?
     
    jcaswell, Sep 25, 2024
    #3
  4. Defender cuts off my internet completely

    Windows Defender not completing scans

    Hi,

    Thank you for posting your query on Microsoft Community.

    As per the description, I understand that you are facing issues using Windows Defender.

    I would suggest you to go through the below methods:

    Method 1: Set Windows Defender to Automatic

    You can set the Windows Defender service to Automatic, Disabled or Manual. Setting it to automatic might solve the problem. Follow these steps:


    • Click Start > type services in the Search box > click Services in the Programs list.

      2. Search for Windows defender.

      3. Double-click Windows Defender, and click Automatic in the start-up box > click OK.

    Method 2: Run SFC scan, it will check, if there is any kind of corruption on the operating system.


    • Press WIN+X.

    • Click on command prompt with admin.

    • Type sfc /scannow and press enter.

    • Reboot the computer once finished.

    Method 3: Try the below link:

    https://support.microsoft.com/en-us/kb/931849

    Hope this information helps. Please let us know if you need any other assistance with Windows in future. We will be happy to assist you.
     
    Sahil Bali, Sep 25, 2024
    #4
Thema:

Defender cuts off my internet completely

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