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KB3020370 Office 365

KB3020370 Error Code Office 365 Information
Difficulty LevelHigh
Resolution:Virus Issue
Cause:System Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix KB3020370 Error Code in Office 365

Repair Difficulty : Critical

Step 1: Disable Firewall

For Windows 7 and later

1) Press “Win + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code KB3020370 Office 365 img7
2) Microsoft Windows Firewall Window will Open.
3) Press “Turn Windows Firewall on or off”
Office Error Code KB3020370 Office 365 img7
Note: You will need Administrator privilege to enable or disable Windows firewall.
Office Error Code KB3020370 Office 365 img5
4) Press “Turn off Windows Firewall (not recommended)” under each network location and then Click “OK”

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

Step 2: Reset Internet Explorer Security settings

1. Now, click on Start button.

start
2. Type the command “inetcpl.cpl” and click OK button.
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: Temporarily Disable Antivirus

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

Step 4: Try the installation again

In most case KB3020370 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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  • January 1st, 1970

    Posted In: Office 365