20 Office 365

20 Error Code Office 365 Information
Difficulty LevelMedium
Resolution:DLL Issue
Cause:System Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 20 Error Code in Office 365

Repair Difficulty : Critical

Step 1: Disable Microsoft Windows Firewall

For Microsoft Windows 7 and later

1) Click Start Button Office Error Code 20 Office 365 Img3 or Simply Press Win key and in right hand side Click on Control Panel.
Office Error Code 20 Office 365 img5
2) In Control Panel Window, Click on Windows Firewall.
Office Error Code 20 Office 365 img6
3) Press “Turn Windows Firewall on or off”
Office Error Code 20 Office 365 img7
Note: If you are logged in as Guest user you will be asked to enter Admin Password
Office Error Code 20 Office 365 img5
4) Press “Turn Off Windows Firewall” under each network location and then Click “OK”

Note: Please Activate Windows Firewall after Office 365 repair is complete.

Step 2: Reset Internet Explorer Security settings

1. Now, click on Start button.

start
2. Enter 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: Disable Antivirus

– Open Your Antivrus
– Disable it till the Office 365 repair is going on. Check vendor website for more details.

Step 4: Try the installation again

In most case 20 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