0x80042109 Office 365

0x80042109 Error Code Office 365 Information
Difficulty LevelCritical
Resolution:System Fix
Cause:System Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 0x80042109 Error Code in Office 365

Repair Difficulty : Medium

Step 1: Disable Firewall

For Windows 8
1) Press Windows key + Q. A search box will show up on right hand side.
Office Error Code 0x80042109 Office 365 step 6
2) Open Windows Firewall from Control Panel
Office Error Code 0x80042109 Office 365 step 7
Office Error Code 0x80042109 Office 365
3) Click On “Turn Windows Firewall on or off”
Office Error Code 0x80042109 Office 365 img 9
Note: If you are logged in as Normal user you may be asked to login as Administrator.
Office Error Code 0x80042109 Office 365 img10
4) Press “Turn off Windows Firewall (not recommended)” under each network
location and then Click “OK”
Office Error Code 0x80042109 Office 365 img11

Step 2: Proxy Setting

1) Open Control Panel.
Windows 7 : Press Win Key and then Select Control Panel from Right window.
Windows 8 : Press Windows key + R and type “Control” and Press Enter.
Office Error Code 0x80042109 Office 365 img 9
2) Click On “Internet Options” In Control Panel .
3) Select Connections Tab and then Choose LAN Setting.
Office Error Code 0x80042109 Office 365 img 11
4) Uncheck “Use a proxy server for your LAN” if its already ON.

Step 3: Repair System Files

1) Press Windows + R
Office Error Code 0x80042109 Office 365 img14
2) Type “cmd” and Press Enter.
Office Error Code 0x80042109 Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code 0x80042109 Office 365 img18
Note: You will need Admin rights to run the command.

Step 4: Try the installation again

In most case 0x80042109 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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