If you have the same problem as I did, having difficulty to get Windows Update to work with an error code 8007000D and a message “Windows Update encountered an unknown error”,
your Windows 7 probably is in a corporate domain network environment where a central patching system like Windows Server Update Services is in charge for managing all windows update needs.
If that’s the case, the Windows Server Update Services hasn’t been upgraded to the latest for quite a while. I believe only the WSUS 3.0 SP1 or later supports Windows 7.
If you are the IT guy who is in charge, please do yourself a favor and upgrade your WSUS right away. If you are not, please forward this post and inform your IT guy to upgrade so that you can get your Windows 7 automatically patched.
However, if upgrading isn’t an option, you are left no option buy have to remind yourself once a week or two to go to Windows Update manager and click on “Check online for updates from Microsoft Update” to manually update your Windows 7.
In any cases, the windows update status on your Windows 7 should be always like: