12002 Office 365

12002 Error Code Office 365 Information
Difficulty Level Critical
Resolution: Manual
Cause: System Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 12002 Error Code in Office 365

Repair Difficulty : Medium

Step 1: Disable Windows Firewall

For Windows 8

1) Press “Win + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code 12002 Office 365 img 8
2) Microsoft Windows 8 Firewall Window will Open.
Office Error Code 12002 Office 365
3) Click On “Turn Windows Firewall on or off”
Office Error Code 12002 Office 365 img 9
Note: If you are logged in as Guest user you will be asked to login as Administrator.
Office Error Code 12002 Office 365 img10
4) Turn
Off Windows Firewall and Press “OK” Button.
Office Error Code 12002 Office 365 img11

Step 2: Temporarily turn off Proxy Settings

1) Open Control Panel.
Windows 7 : Click Start and then Select Control Panel from Right window.
Windows 8 : Press Windows key + R and type “Control” and Press Enter.
Office Error Code 12002 Office 365 img 9
2) In Search Box Type Internet and Click on “Internet Options”.
3) Select Connections Tab and then Click On LAN Setting.
Office Error Code 12002 Office 365 img 11
4) Uncheck “Use a proxy server for your LAN” if its already ON.

Step 3: Check System Integrity

1) Press Windows + R
Office Error Code 12002 Office 365 img14
2) Type cmd and Press Enter.
Office Error Code 12002 Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code 12002 Office 365 img18
Note: If you are logged in as Guest user you will be asked to

Step 4: Try the installation again

In most case 12002 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

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