This might not be working for you(Due to bad pretty bad way to explanation) , please check the comment section for a better SOLUTION especially the PINNED COMMENT.

Fix Error 0x80070005 which occurs on Windows Update while you are trying to install any updates.
This is an error which is seen while updating windows. Watch the Video for solving . Required Links are in below.

Things you should make sure is that you should logged on as an administrator.
Download SubInACL tool http://goo.gl/73ZpCe. Install it on C://Windows//system32
Install

Copy the command below to notepad and save it as Reset.cmd and also run the command as administrator.

@echo off
subinacl /subkeyreg HKEY_LOCAL_MACHINE /grant=administrators=f /grant=system=f
subinacl /subkeyreg HKEY_CURRENT_USER /grant=administrators=f /grant=system=f
subinacl /subkeyreg HKEY_CLASSES_ROOT /grant=administrators=f /grant=system=f
subinacl /subdirectories %windir% /grant=administrators=f /grant=system=f
@Echo =========================
@Echo Finished.
@Echo =========================
@pause

Subscribe us: https://goo.gl/qQOiYO

Do not forget to LIKE and SHARE.

Do check My
Facebook: https://goo.gl/5eE8oS

How about watching some other videos:
Tips for MX Player: https://goo.gl/dGVOmh
Watch more android videos: https://goo.gl/o0piBa

Please take the opportunity to connect and share this video with your friends and family if you find it useful.