80070020 Office 365

80070020 Error Code Office 365 Overview
Difficulty LevelMedium
Resolution:DLL Issue
Cause:System Integrity Issue
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 80070020 Error Code in Office 365

Repair Difficulty : Critical

Step 1: Disable Firewall

For Microsoft Windows 7 and later

1) Open Control Panel Window (Click Start Office Error Code 80070020 Office 365 img4 and press “Control Panel” Button on Right Side)
Office Error Code 80070020 Office 365 img5
2) In Control Panel , type firewall in the search box and click on Windows Firewall.
Office Error Code 80070020 Office 365 img6
3) Tap On “Turn Windows Firewall on or off”
Office Error Code 80070020 Office 365 img7
Warning: If you are logged in as Normal user you will be asked to login as Administrator.
Office Error Code 80070020 Office 365 img5
4) Under “Home or Work Network Location Settings” And “Public Network Location Settings” Click On “Turn Off Windows Firewall”

Warning: You can activate Microsoft Windows Firewall after Office 365 installation is complete.

Step 2: Reset Internet Explorer Security settings

1. Now, tap on Start button.

start
2. Type the command “inetcpl.cpl” and click OK.
3. Click on the “Security” tab.

inetcpl security
4. Click “Reset all zones to default level” button at the bottom of the window.
5. Click OK button.

Step 3: Run System Scan

1) Press Windows + R
Office Error Code 80070020 Office 365 img14
2) Type “cmd” and Press Enter.
Office Error Code 80070020 Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code 80070020 Office 365 img18
Note:
Step 3:Check System Files For Error
1) Press Windows + R
Office Error Code 80070020 Office 365
2) Type “Cleanmgr” and Press Enter.
Office Error Code 80070020 Office 365 img19
3) Select the OS Drive and Press OK.
4) Click on Clean up System Files

Step 4: Try the installation again

In most case 80070020 error code in Office 365 should be resolved by now, if however the problem still persists please get your system checked by an expert.

If you are not able to resolve the issue following above steps, you can contact our 24×7 Chat Support for help.

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  • Posted In: Office 365