8004005-0 Office 365

8004005-0 Error Code Office 365 Overview
Difficulty LevelCritical
Resolution:Manual
Cause:Software Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 8004005-0 Error Code in Office 365

Repair Difficulty : Medium

Step 1: Disable Microsoft Windows Firewall

For Microsoft Windows 8
1) Press Win key + Q. A search box will come up on right hand side.
Office Error Code 8004005-0 Office 365 step 6
2) In Control Panel , type firewall in the search box and click on Windows Firewall.
Office Error Code 8004005-0 Office 365 step 7
Office Error Code 8004005-0 Office 365
3) On left hand side you will find “Turn Windows Firewall on or off”
Office Error Code 8004005-0 Office 365 img 9
Warning: If you are logged in as Guest user you will be asked to
Office Error Code 8004005-0 Office 365 img10
4) Turn
Off Windows Firewall and Press “OK” Button.
Office Error Code 8004005-0 Office 365 img11

Step 2: Check Proxy Setting

1) Open Control Panel.
Microsoft Windows 7 : Press Win Key and then Select Control Panel from Right Pane.
Microsoft Windows 8 : Press Windows key + R and type “Control” and Press Enter.
Office Error Code 8004005-0 Office 365 img 9
2) In Control Panel Click on “Internet Options”.
3) Select Connections Tab and then Choose LAN Setting.
Office Error Code 8004005-0 Office 365 img 11
4) Turn off “Use a proxy server for your LAN” if its switched 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 8004005-0 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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