800488fa Office 365

800488fa Error Code Office 365 Information
Difficulty LevelCritical
Resolution:DLL Issue
Cause:System Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 800488fa Error Code in Office 365

Repair Difficulty : High

Step 1: Disable Firewall

For Microsoft Windows 7 and later

1) Press “Windows Key + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code 800488fa Office 365 img7
2) Windows Firewall Window will Open.
3) Tap On “Turn Windows Firewall on or off”
Office Error Code 800488fa Office 365 img7
Note: If you are logged in as Guest user you may be asked to
Office Error Code 800488fa Office 365 img5
4) Finally Click on “Turn off Windows Firewall (not recommended)” under each of the active network connections.

Warning: Please Activate Windows Firewall after Office 365 installation is complete.

Step 2: Temporarily turn off Proxy Settings

1) Goto 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 800488fa Office 365 img 9
2) Open “Internet Options” In Control Panel Window.
3) Select Connections Tab and then Choose LAN Setting.
Office Error Code 800488fa 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 vendor website for more details.

Step 4: Try the installation again

In most case 800488fa 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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