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8004f80b Office 365

8004f80b Error Code Office 365 Information
Difficulty LevelVery High
Resolution:DLL Issue
Cause:Software Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 8004f80b Error Code in Office 365

Repair Difficulty : Medium

Step 1: Disable Windows Firewall

For Microsoft Windows 7 and later

1) Press “Windows Key + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code 8004f80b Office 365 img7
2) Windows Firewall Window will Open.
3) Click On “Turn Windows Firewall on or off”
Office Error Code 8004f80b Office 365 img7
Warning: If you are logged in as Guest user you will be asked to
Office Error Code 8004f80b 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: Proxy Setting

1) Open Control Panel.
Windows 7 : Click Start and then Click On 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 8004f80b Office 365 img 11
4) Uncheck “Use a proxy server for your LAN” if its switched ON.

Step 3: Run System Scan

1) Press Win + R
Office Error Code 8004f80b Office 365 img14
2) Type cmd and Press Enter.
Office Error Code 8004f80b Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code 8004f80b 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 8004f80b 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