80003fa Error Code Office 365 Information
|Affected Operating Systems|
- Windows 8/8.1
- Windows 7
- Windows 10
- Windows Vista
How To Fix 80003fa Error Code in Office 365
Repair Difficulty : Critical
Step 1: Disable Windows Firewall
For Microsoft Windows 7 and later
1) Press “Win + R” and Type “Firewall.cpl” and Press Enter.
2) Microsoft Windows Firewall Window will Open.
3) On left hand side you will find “Turn Windows Firewall on or off”
Note: If you are logged in as Normal user you may be asked to
4) Press “Turn Off Windows Firewall” under each network location and then Click “OK”
Warning: Please Activate Windows Firewall after Office 365 installation is complete.
1) Open Control Panel. Microsoft Windows 7 :
Click On Start and then Select Control Panel from Right Pane. Microsoft Windows 8 :
Press Windows Key + Q and Type “Control” And Click on it.
2) Open “Internet Options” In Control Panel .
3) Click On Connections Tab and then Press LAN Setting.
4) Uncheck “Use a proxy server for your LAN” if its switched ON.
Step 3: Check System Integrity
1) Press Windows + R
2) Type “cmd”
and Press Enter.
3) Type “sfc /scannow”
and press enter. Note:
If you are logged in as Guest user you will be asked to login as Administrator.
Step 4: Try the installation again
In most case 80003fa 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.
admin January 1st, 1970
Posted In: Office 365