I initially got a BSOD 0xc00000f which chkdsk sorted then I ran into 0xc000000f which I got around by restoring backup hives. 0xc000000d was in there somewhere as well which, if I remember this whole process order correctly, I ran bootrec
/rebuildbcd. But now it's choking up with c000021a 0x00000000 which seems to be caused by Windows updates, this makes sense as the machine has been running for 3 years without error. I checked the windowsupdate.log and there are updates for
the last two days. I have noted them down and am trying to uninstall with: wusa /uninstall /kb:<number> but it doesn't seem to uninstalling as my prompt is available immediately and a windows pops up showing Windows Update Standalone Installer
I'm not a qualified Microsoft whatever, the above I've done according to searches.
Based on your description, I understand that you have rebuild the boot configuration Data to solve a BSOD issue.
Then error c000021a was occurred. If anything I misunderstand, please don’t hesitate to let me know.
Regarding to the 0xC000021A, please refer to the article:
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