If you have ever tried to install updates for Excel 2016 and used Window Store, then you might have encountered an error. Can’t solve it?

Have you been prompted with the error code 0x80070663? Here are some fixes to solve this issue, but before getting started let’s see why you might experience this error.

Windows Update Error Code 0x80070663 is commonly encountered and it’s related to Windows Update Installer. The error might appear when you’re starting to install updates for MS Office 365, 2013, or 2016. If you’re using an old version of Windows (7, XP, Vista, etc.), you can fix it by upgrading to the latest Windows OS Version.

You could also see this error if Windows Update service is down and has corrupted Windows update components. If the error 0x80070663 shows up when you install MS Excel, then you might need to uninstall and reinstall the Office pack. We recommend you getting the Office package from either the official Microsoft webpage or a different source that is reliable.

Let’s get started and walk you through all the fixes.

  1. Run Windows Update Troubleshooter

The first step should be checking if your Windows Update service is working.

Press ‘Windows’ key + ‘I’ -> open ‘Update & Security’.

Select ‘Troubleshoot’ -> find ‘Windows Update’.

Click ‘Windows Update’ -> select ‘Run troubleshooter’.

This should take about 10 minutes and after it finishes scanning, it will notify you if Windows has automatically fixed the problems.

  1. Restart Windows Update Components

Right-click ‘Windows’ key -> select ‘Command Prompt (Admin)’.

Click ‘OK’ to continue if UAC comes up.

You must enter the next commands to stop the following services: stop BITS, Windows Update, Cryptographic, and MSI Installer. After each command you must press ‘Enter’:

net stop bits

net stop wuauserv

net stop appidsvc

net stop cryptsvc

Type Del “%ALLUSERSPROFILE%\\Application Data\\Microsoft\\Network\\Downloader\\qmgr*.dat” command. It will delete qmgr*.dat files.

Copy and then paste cd /d %windir%\\system32 command and press ‘Enter’.

After this, you will have to re-register BITS and Windows Update files. You must type all the commands, after each one pressing ‘Enter’:

regsvr32.exe atl.dll

regsvr32.exe urlmon.dll

regsvr32.exe mshtml.dll

regsvr32.exe shdocvw.dll

regsvr32.exe browseui.dll

regsvr32.exe jscript.dll

regsvr32.exe vbscript.dll

regsvr32.exe scrrun.dll

regsvr32.exe msxml.dll

regsvr32.exe msxml3.dll

regsvr32.exe msxml6.dll

regsvr32.exe actxprxy.dll

regsvr32.exe softpub.dll

regsvr32.exe wintrust.dll

regsvr32.exe dssenh.dll

regsvr32.exe rsaenh.dll

regsvr32.exe gpkcsp.dll

regsvr32.exe sccbase.dll

regsvr32.exe slbcsp.dll

regsvr32.exe cryptdlg.dll

regsvr32.exe oleaut32.dll

regsvr32.exe ole32.dll

regsvr32.exe shell32.dll

regsvr32.exe initpki.dll

regsvr32.exe wuapi.dll

regsvr32.exe wuaueng.dll

regsvr32.exe wuaueng1.dll

regsvr32.exe wucltui.dll

regsvr32.exe wups.dll

regsvr32.exe wups2.dll

regsvr32.exe wuweb.dll

regsvr32.exe qmgr.dll

regsvr32.exe qmgrprxy.dll

regsvr32.exe wucltux.dll

regsvr32.exe muweb.dll

regsvr32.exe wuwebv.dll

Type netsh winsock reset and then netsh winhttp reset proxy commands to reset Winsock. Press ‘Enter’ after each command.

Restart BITS, Windows Update, Cryptographic, MSI Installer services with these commands, each of them must be followed by ‘Enter’:

net start bits

net start wuauserv

net start appidsvc

net start cryptsvc

  1. Install all Windows Cumulative Updates

If you haven’t been successful with the first fixes, then you should install all the Windows 10 Cumulative Updates that are missing.

  1. Reinstall Microsoft Office

If all the updates have no errors, then the 0x80070663 error might be caused by a corrupted file from the Office update. You should reinstall the whole MS Office to fix the issue.

For Windows 10

Press ‘Windows’ key + ‘I’ -> ‘Settings’

Open ‘Apps’ -> ‘Programs & Features’.

Look for ‘Microsoft Office’, click it and select ‘Uninstall’.

Once you’ve finish uninstalling it, reboot your PC. Then go to the official Microsoft website or another source that is reliable, and choose a full Microsoft Office package.

These solutions should help you get rid of the Windows Update Error Code 0x80070663.

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