Mysterious Windows 10 version 1511 patch KB 3122947 fails to install
Late Friday, Dec. 4, Microsoft released its latest update for Windows 10 version 1511, an odd patch called KB 3122947. If you aren't actively blocking forced updates in Windows 10 and your machine could get KB 3122947 to install, you will find that your winver (in the Cortana search box, type "winver" and press Enter) comes up at 10586.17. Unfortunately, many people are seeing notifications that KB 3122947 failed to install with error 0x80070643.
Not everyone will see KB 3122947. For example, if your machine hasn't yet upgraded to the Fall Update/Threshold 2/version 1511 patch level, for whatever reason, this KB doesn't show up.
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