• July 17, 2017
    Announcement: New site design for Microsoft Community

    In July, Microsoft will roll out the first of ongoing site improvements aimed to modernize Microsoft Community and help customers get the most out of their community experience.

    • During the roll out period, you may see the old or new site design depending on your location

    • We expect the roll out to finish by 31 July

    Note: Past private message conversations will not move to the new site design. Please save any private messages you would like to keep.

     Learn more about the upcoming site improvements in this thread.

    Thank you for being part of Microsoft Community!

  • This thread is locked from future replies

not installing microsoft securety essential error code ox80070643

sukeshparikh asked on
not installing microsoft securety essential error code ox80070643
2 people had this question

Abuse history

The answered status icon Answer
Dr. Strangelove replied on

Review this thread:   http://social.answers.microsoft.com/Forums/en-US/msestart/thread/908fad3e-f9fc-4d8a-be83-ae7d3bc48db5

And, verify that you have removed all other  real-time antimalware products that were ever installed on your PC, including free/trial products that were installed when the PC was purchased (Norton, McAfee, TM, AVG, OneCare, Malwarebytes (paid), etc). Then, use the cleanup tools here:  List of anti-malware program cleanup/uninstall tools


NOTE: If you have installed Adobe FLASH, and you already had the google toolbar, you were presented with the option to install “McAfee Security Scanner”, which is selected by default. If you were caught by this, and unknowingly/accidently installed McAfee, uninstall it and use the McAfee cleanup tool in the list above.


Verify that your PC clock is correctly set. If not, correct it.

Verify that Windows Defender is uninstalled (if XP), or Disabled (if Vista/W7).

Verify that you are up-to-date with SERVICE PACKS and updates (including .NET). Yes, it can take some time to do this.


If the problem persists, submit a support case to Microsoft: https://support.microsoftsecurityessentials.com/?scrx=1




Computers verified since 1972
Computers verified since 1972
Be the first person to mark this helpful

Abuse history