802400 Office 365

802400 Error Code Office 365 Overview
Difficulty LevelCritical
Resolution:System Fix
Cause:Application Layer Corrupt
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 802400 Error Code in Office 365

Repair Difficulty : Critical

Step 1: Disable Firewall

For Windows 8

1) Press “Windows Key + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code 802400 Office 365 img 8
2) Microsoft Windows 8 Firewall Window will Open.
Office Error Code 802400 Office 365
3) Tap On “Turn Windows Firewall on or off”
Office Error Code 802400 Office 365 img 9
Note: If you are logged in as Normal user you will be asked to login as Administrator.
Office Error Code 802400 Office 365 img10
4) Turn
Off Windows Firewall and Press “OK” Button.
Office Error Code 802400 Office 365 img11

Step 2: Reset Internet Explorer Security settings

1. Now, tap on Start button.

start
2. Enter the command “inetcpl.cpl” and click OK button.
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 again.

Step 3: Run System Scan

1) Press Win + R
Office Error Code 802400 Office 365 img14
2) Type “cmd” and Press Enter.
Office Error Code 802400 Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code 802400 Office 365 img18
Note:
Step 3:Run Disk Cleanup Utility
1) Press Win + R
Office Error Code 802400 Office 365
2) Type “Cleanmgr” and Press Enter.
Office Error Code 802400 Office 365 img19
3) Select the OS Drive and Press OK.
4) Click on “Clean up System Files”

Step 4: Try the installation again

In most case 802400 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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