12002-4-0 Office 365

12002-4-0 Error Code Office 365 Information
Difficulty LevelHigh
Resolution:Manual
Cause:File Corruption
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 12002-4-0 Error Code in Office 365

Repair Difficulty : High

Step 1: Disable Windows Firewall

For Windows 7 and later

1) Press “Win + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code 12002-4-0 Office 365 img7
2) Windows Firewall Window will Open.
3) Press “Turn Windows Firewall on or off”
Office Error Code 12002-4-0 Office 365 img7
Warning: You will need Admin privilege to disable firewall.
Office Error Code 12002-4-0 Office 365 img5
4) Turn Off Windows Firewall and Press “OK” Button.

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

Step 2: Check Proxy Setting

1) Goto Control Panel.
Microsoft Windows 7 : Click On Start and then Select Control Panel from Right Pane.
Windows 8 : Press Windows Key + Q and Type “Control” And Click on it.
2) In Control Panel Click on “Internet Options”.
3) Select Connections Tab and then Choose LAN Setting.
Office Error Code 12002-4-0 Office 365 img 11
4) Uncheck “Use a proxy server for your LAN” if its already ON.

Step 3: Temporarily Disable Antivirus

– Open Your Antivrus software
– 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 12002-4-0 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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