error code: 0x800B0003

I am trying to install Microsoft Security Essentials and I am getting an installation error.  error code: 0x800B0003. 

Any ideas on how to fix this.
The installation of MSE relies on Windows Update and this appears to be a Windows Update error: Perhaps something within that article may help.


What operating system?

Prior Security Software?

Any security software still installed?

A possible reason for this problem is that you have conflicting security software installed fully or partially on the PC. Remove all other security software from the PC.
You may need to use a cleanup tool to remove your prior security software:

If that fails to resolve the problem, open a support case:
To open an email support case, start here:


~ Microsoft MVP Windows Live ~ Windows Live OneCare| Live Mesh|MS Security Essentials Forums Moderator ~
Windows Insider MVP (Security)

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Question Info

Last updated June 23, 2020 Views 39,190 Applies to: