404 Office 365

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

How To Fix 404 Error Code in Office 365

Repair Difficulty : High

Step 1: Disable Windows Firewall

For Windows 7 and later

1) Press “Windows Key + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code 404 Office 365 img7
2) Windows Firewall Window will Open.
3) Click On “Turn Windows Firewall on or off”
Office Error Code 404 Office 365 img7
Note: You will need Admin privilege to enable or disable Windows firewall.
Office Error Code 404 Office 365 img5
4) Under “Home or Work Network Location Settings” And “Public Network Location Settings” Click On “Turn Off Windows Firewall”

Warning: You can activate Microsoft Windows Firewall after Office 365 installation is complete.

Step 2: Reset Internet Explorer Security settings

1. Now, tap on Start button.

start
2. Enter the command “inetcpl.cpl” and click OK.
3. Click on the “Security” tab.

inetcpl security
4. Click “Reset all zones to default level” button at the bottom of the window.
5. Click OK button.

Step 3: Temporarily Disable Antivirus

– Open Your Antivrus software
– Disable it till the Office 365 repair is going on. Check manufacturer website for more details.

Step 4: Try the installation again

In most case 404 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