WOW! This saved my computer! I thought I was going to have to wipe and reinstall! I started with Error c000009a; then after trying to trouble shoot got the c0000034 error - and just about lost it all; then I found this forum and this other forum http://answers.microsoft.com/en-us/windows/forum/windows_other-windows_update/error-code-c000009a-problems-applying-update-to/365bb5ac-065f-422e-901b-843496ff1245
that notepad.exe in cmd prompt saved the whole process for me! Thank you ALL so much!!!
