0x80070643 Office 365

0x80070643 Error Code Office 365 Overview
Difficulty LevelHigh
Resolution:DLL Issue
Cause:Application Layer Corrupt
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 0x80070643 Error Code in Office 365

Repair Difficulty : Critical

Step 1: Disable Microsoft Windows Firewall

For Windows 7 and later

1) Press “Win+R” button and Type “Control” followed by Enter key.
Office Error Code 0x80070643 Office 365 img5
2) Open Windows Firewall from Control Panel Window.
Office Error Code 0x80070643 Office 365 img6
3) Tap On “Turn Windows Firewall on or off”
Office Error Code 0x80070643 Office 365 img7
Warning: You will need Administrator privilege to enable or disable Windows firewall.
Office Error Code 0x80070643 Office 365 img5
4) Under “Home or Work Network Location Settings” And “Public Network Location Settings” Click On “Turn Off Windows Firewall”

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

Step 2: Proxy Setting

1) Goto Control Panel.
Microsoft Windows 7 : Click On Start and then Select Control Panel from Right window.
Microsoft Windows 8 : Press Windows key + R and type “Control” and Press Enter.
Office Error Code 0x80070643 Office 365 img 9
2) Click On “Internet Options” In Control Panel .
3) Select Connections Tab and then Choose LAN Setting.
Office Error Code 0x80070643 Office 365 img 11
4) Turn off “Use a proxy server for your LAN” if its switched ON.

Step 3: Repair System Files

1) Press Win + R
Office Error Code 0x80070643 Office 365 img14
2) Type cmd and Press Enter.
Office Error Code 0x80070643 Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code 0x80070643 Office 365 img18
Note: You will need Admin previlage to run the sfc command.

Step 4: Try the installation again

In most case 0x80070643 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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