How to Fix Error Code 30174-40 Office 365 – Instructions
30174-40 Error Code Office 365 Overview
Affected Operating Systems
How To Fix 30174-40 Error Code in Office 365
Repair Difficulty : Medium
Step 1: Disable Microsoft Windows Firewall
For Windows 7 and later
1) Press “Windows Key + R” and Type “Firewall.cpl” and Press Enter.
2) Windows Firewall Window will Open. 3) Click On “Turn Windows Firewall on or off”
Warning: If you are logged in as Normal user you may be asked to enter Admin Password
4) Turn Off Windows Firewall and Press “OK” Button.
Warning: You can activate Windows Firewall after Office 365 installation is complete.
Step 2: Proxy Issue
1) Goto 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 Choose LAN Setting.
4) Turn off “Use a proxy server for your LAN” if its already ON.
Step 3: Check System Integrity
1) Press Win + R
2) Type cmd and Press Enter.
3) Type “sfc /scannow” and press enter.
Note: You will need Admin rights to run the sfc command.
Step 4: Try the installation again
In most case 30174-40 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.