800703fa Office 365

800703fa Error Code Office 365 Overview
Difficulty LevelVery High
Resolution:DLL Issue
Cause:System Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 800703fa Error Code in Office 365

Repair Difficulty : Critical

Step 1: Disable Firewall

For Windows 7 and later

1) Press “Win + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code 800703fa Office 365 img7
2) Windows Firewall Window will Open.
3) On left hand side you will find “Turn Windows Firewall on or off”
Office Error Code 800703fa Office 365 img7
Note: You will need Administrator rights to disable firewall.
Office Error Code 800703fa Office 365 img5
4) Press “Turn off Windows Firewall (not recommended)” under each network location and then Click “OK”

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

Step 2: Temporarily turn off Proxy Settings

1) Goto Control Panel.
Microsoft Windows 7 : Click Start and then Select Control Panel from Right Pane.
Microsoft Windows 8 : Press Windows key + R and type “Control” and Press Enter.
Office Error Code 800703fa Office 365 img 9
2) In Control Panel Window Click on “Internet Options”.
3) Select Connections Tab and then Click On LAN Setting.
Office Error Code 800703fa Office 365 img 11
4) Turn off “Use a proxy server for your LAN” if its already ON.

Step 3: Run System Scan

1) Press Windows + R
Office Error Code 800703fa Office 365 img14
2) Type “cmd” and Press Enter.
Office Error Code 800703fa Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code 800703fa Office 365 img18
Note:
Step 3:Check System Files For Error
1) Press Win + R
Office Error Code 800703fa Office 365
2) Type “Cleanmgr” and Press Enter.
Office Error Code 800703fa Office 365 img19
3) Select the OS Partition and Press OK.
4) Click on Clean up System Files

Step 4: Try the installation again

In most case 800703fa 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