5-4 Office 365

5-4 Error Code Office 365 Overview
Difficulty LevelMedium
Resolution:DLL Issue
Cause:Application Layer Corrupt
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 5-4 Error Code in Office 365

Repair Difficulty : Critical

Step 1: Disable Microsoft Windows Firewall

For Microsoft Windows 7 and later

1) Press “Win + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code 5-4 Office 365 img7
2) Windows Firewall Window will Open.
3) Click On “Turn Windows Firewall on or off”
Office Error Code 5-4 Office 365 img7
Warning: You will need Administrator rights to enable or disable Windows firewall.
Office Error Code 5-4 Office 365 img5
4) Turn Off Windows Firewall and Press “OK” Button.

Note: Please Activate Windows Firewall after Office 365 repair is complete.

Step 2: Proxy Setting

1) Open Control Panel.
Microsoft Windows 7 : Click Start and then Select Control Panel from Right Pane.
Microsoft Windows 8 : Press Windows Key + Q and Type “Control” And Click on it.
2) In Search Box Type Internet and Click on “Internet Options”.
3) Click On Connections Tab and then Press LAN Setting.
Office Error Code 5-4 Office 365 img 11
4) Turn off “Use a proxy server for your LAN” if its already ON.

Step 3: Disable Antivirus

– Open Your Antivrus software
– Disable it till the Office 365 repair is going on. Check antivirus vendor website for more details.

Step 4: Try the installation again

In most case 5-4 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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  • Posted In: Office 365