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5516 Views 9 Replies Latest reply: Jul 3, 2012 3:01 PM by karthiks RSS
saramcpa Newcomer 6 posts since
Jan 30, 2012
Currently Being Moderated

Jan 30, 2012 11:32 AM

Why can't I connect to the internet after installing McAfee

We installed mcafee anti-virus on our pc.   As soon as this software was installed I lost access to my internet on the computer I had installed it on.  I powered down my computer, turned off my router and modem and rebooted.  I still did not have access.  My router was able to send out wireless signals to other laptops within my house and was capable of being pinged by our ISO provider so the issue was purely with this computer.   I called up mcafee support as to what might be causing this issue and they told me to install a patch by accessing my email.  However, since I did not have access to the internet I was unable to access this patch.  I then uninstalled McAfee with fears of firewall conflicts with my router, but this still didn’t improve the situation.


I then opened my command prompt and confirmed I was not able to ping any other website.  I then ran the following commands to rebuild my ip configuration. 


  1. Ipconfig/flushdns
  2. Ipconfig/registerdns
  3. Ipconfig/release
  4. Ipconfig/renew


I still could not log on and the ip address on the computer began with  169.254 instead of 192.168.  


I’m still unable to get online, but can’t help but to think that this all started when I downloaded and installed mcafee.

  • JaiPrakash Champion 457 posts since
    Nov 5, 2009


    Hi saramcpa,

    Please verify if you have removed McAfee completely off the PC by going through programs and features list – Ensure McAfee is nt listed . Alternatively, McAfee programs would be disabled in safe mode with networking .


    Please restart your PC and while it restarts, keep tapping the F8 key.

    You would be in the advanced boot options menu

    From here, select safe mode with networking with your up/down arrow keys on keyboard

    Press enter for the selection

    Once you are at the desktop , try to open your web browser and access Internet 



    If you are still unable to connect , its best to check with your ISP



    Jai Prakash
  • amjad Newcomer 18 posts since
    Feb 2, 2012

    Have you checked your IP configurations and firewall settings?

    "If you don’t make mistakes, you’re not working on hard enough problems."
  • JaiPrakash Champion 457 posts since
    Nov 5, 2009


    Then the best would be contact your ISP and let them check from their end for connectivity issues .




    Jai Prakash
  • cheekymonkey Newcomer 10 posts since
    Jul 2, 2012

    saramcpa  this sounds so similar to my problem i just been posting.


    unlike your i can connect to the internet but couldn't access my hotmaill account which if you see my post hotmail was adament was due to mcafee?!?!???


    anyway i have similar problems like you did as mcafee so far have been unable to answer my questions either on here, by phone or any other means at present.!!


    its has cost me a fortune too in calling up all these bloody numbers.!!!!!!


    glad yours was resolved eventually.!!

  • karthiks Veteran 740 posts since
    Mar 30, 2011



    Please update me the following :


    What is the Operating system you are using ? Windows 7/ Vista/ XP (update me with Service Pack)

    What is the type of internet connection you are connected ? Cable/ DSL/Wireless

    Whether you are able to access the internet by diagnosing the connection ?

    Karthik Shankar
    McAfee Community Moderator

    Do you have an idea for improving McAfee products? Please share it with our product team in our new Ideas community space! NOTE: You must register an account first. We look forward to hearing from you. Thank you for choosing McAfee!

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