Windows Update error 80070002 (Windows 7)

Alright, follow the instructions below please.

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Retrieving the COMPONENTS Hive
Follow the instructions below to retrieve your COMPONENTS Hive and send me it.
  • Open your Windows Explorer, and navigate to the C:\Windows\System32\Config folder;
  • In this folder, find the COMPONENTS file (there's no extension), and copy it to your Desktop;
    Note: If you receive an error message saying that the COMPONENTS file is in use, restart your computer and try again. If the error message persist, let me know.
  • Right-click on it, and select Send to... and choose Compressed (zipped) folder;
  • Upload the file on Dropbox, Google Drive or OneDrive and post the download URL for it here;

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Exporting the CBS Registry Key
Follow the instructions below to export the CBS Key from the Registry and upload it.
  • On Windows 7, click on the Start Menu button, then enter Regedit, right-click on the icon that will appear and select Run as Administrator;
  • On Windows 8 and Windows 8.1, press on the Win key + S keys, enter Regedit, right-click on the icon that will appear and select Run as Administrator;
  • In Regedit, in the left-pane, navigate to the Registry key below and select it by clicking on it:
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing
  • Once the key is selected, click on the File menu and select Export...;
  • From there Save menu, change the Save as type: to Registry Hive Files (*.*);
  • Name the file CBS (without any file extension) and save it on your Desktop;
  • Upload the file on Dropbox, Google Drive or OneDrive and post the download URL here;

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Exporting the WinSxS Registry Key
Follow the instructions below to export the WinSxS Key from the Registry and upload it.
  • On Windows 7, click on the Start Menu button, then enter Regedit, right-click on the icon that will appear and select Run as Administrator;
  • On Windows 8 and Windows 8.1, press on the Win key + S keys, enter Regedit, right-click on the icon that will appear and select Run as Administrator;
  • In Regedit, in the left-pane, navigate to the Registry key below and select it by clicking on it:
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SideBySide
  • Once the key is selected, click on the File menu and select Export...;
  • From there Save menu, change the Save as type: to Registry Hive Files (*.*);
  • Name the file WinSxS (without any file extension) and save it on your Desktop;
  • Upload the file on Dropbox, Google Drive or OneDrive and post the download URL here;
 
Good :) Try to install your SP1 again. If it fails, send me the WindowsUpdate.log and CBS.log files again please.
 
The KB2579686 still throws the error. Now that you installed it, you should be able to uninstall it properly.

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Uninstall a Windows Update - Command Prompt
Follow the instructions below to uninstall a Windows Update manually via the command prompt.
  • On Windows Vista & 7, click on the Windows Start Menu, then enter cmd in the search box, right-click on the cmd icon and select Run as Administrator
  • On Windows 8, drag your cursor in the bottom-left corner, and right-click on the metro menu preview, then select Command Prompt (Admin);
  • On Windows 8.1, right click on the Windows logo in the bottom-left corner and select Command Prompt (Admin);
  • Enter the command below (you can copy/paste it, to paste in the command prompt, right-click inside it and select Paste):
    Code: 
    wusa /uninstall /KB:2579686
  • Let me know the outcome of the command: either it uninstall the update or either it says that the update isn't installed on the system;
 
Alright, restart your computer and try to install the SP1 again please.
 
Looks like there was an issue with the installation process (not related to our usual errors). Can you try to install it again and upload the logs when it fails?
 
Alright, new update to uninstall, KB2588516.
 
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