8004005 Office 365

8004005 Error Code Office 365 Overview
Difficulty LevelVery High
Resolution:Manual
Cause:Application Layer Corrupt
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 8004005 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 8004005 Office 365 img 8
2) Windows 8 Firewall Window will Open.
Office Error Code 8004005 Office 365
3) Press “Turn Windows Firewall on or off”
Office Error Code 8004005 Office 365 img 9
Note: If you are logged in as Guest user you will be asked to
Office Error Code 8004005 Office 365 img10
4) Turn
Off Windows Firewall and Press “OK” Button.
Office Error Code 8004005 Office 365 img11

Step 2: Proxy Issue

1) Open Control Panel.
Windows 7 : Click Start and then Select Control Panel from Right window.
Microsoft Windows 8 : Press Windows key + R and type “Control” and Press Enter.
Office Error Code 8004005 Office 365 img 9
2) In Search Box Type Internet and Click on “Internet Options”.
3) Select Connections Tab and then Press LAN Setting.
Office Error Code 8004005 Office 365 img 11
4) Turn off “Use a proxy server for your LAN” if its already ON.

Step 3: Repair System Files

1) Press Windows + R
Office Error Code 8004005 Office 365 img14
2) Type cmd and Press Enter.
Office Error Code 8004005 Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code 8004005 Office 365 img18
Note: If you are logged in as Normal user you will be asked to login as Administrator.

Step 4: Try the installation again

In most case 8004005 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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