Windows 10 Anniversary Update Install Fails with Errors 0x80070057, 0xa0000400

Hello everyone, seem like im one of the victim of this update, again after previous upgrade from windows 8 to windows 10. Here is method that i tried, after this 0x80070057, 0xa0000400 error, and it works. Here is the steps:

  1. run CMD as administrator
  2. hit this: net user Administrator /active:yes
  3. Close CMD
  4. Now there should be a new Administrator account. This account is Build In Administrator. Login with this new Administrator Account.
  5. Open Setting, Updates & Security, Windows Update. DO NOT CLICK CHECK FOR UPDATE YET.
  6. Open CMD, Run As Administrator. Type: wuauclt.exe /updatenow  (DO NOT HIT ENTER YET).
  7. Now go back to Windows Update, and click CHECK FOR UPDATE, then quickly hit Enter in CMD.
  8. Repeat wuauclt.exe /updatenow each time the progress bar change, example, now it 1%, hit wuauclt.exe /updatenow, then 2%, hit again wuauclt.exe /updatenow. until it finish install.
  9. NOT NEED to delete anything, icluding downloaded updates. just follow this step. hope it works for you guys. if works, please comment below…….bwahahaha. tq..
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