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MSE Virus and Spyware Definitions Update Failed with 0x80070422

Virus and spyware definitions update failed
Security Essentials could not check for virus and spyware definition updates due to an Internet or network connectivity issue.
Click Help for more information about this problem.
Error code: 0x80070422
Error description: Security Essentials can't start the update service because it's been disabled by the security administrator or as a result of a problem in the registry data.
If you get the above error when updating the virus definitions in Microsoft Security Essentials, stop the Background Intelligent Transfer Service and start Automatic Updates. You can start the services from Start --> Run --> services.msc.

MSE requires both these services to run, but some users have observed that BITS causes failures when a manual update to the virus definition is made. Start the service back after you have done updating the definitions manually.

You can also download the latest virus definitions from a separate computer and apply them on your computer from Microsoft's Malware Protection Center.


  1. Thanks for helping me maintain my computer free from virus!

  2. The given solution is really very nice, but some time after doing this still same problem occur.
    so try this,
    go to RUN> Type services.msc
    u will find DNS CLIENT.
    click on this and then stop that services.
    Enjoy your pc virus free!!

  3. The "BITS" wasn't the problem. I acquired the "System progressive security" malware a couple of days ago, thought I had rigorously removed it from my system. But it seems it has managed to stop and disable "Windows Update" as well. Anyone reading this: has the step-by-step for the rest of the removal process; I'll add a note to the comments section.

  4. i use windows 7,
    in services.msc, i can not find automatic updaes there.

  5. Thank you very much... problem resolved...!


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