80070490 Office 365

80070490 Error Code Office 365 Overview
Difficulty Level High
Resolution: DLL Issue
Cause: Application Layer Corrupt
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 80070490 Error Code in Office 365

Repair Difficulty : Medium

Step 1: Disable Firewall

For Windows 8

1) Press “Windows Key + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code 80070490 Office 365 img 8
2) Windows 8 Firewall Window will Open.
Office Error Code 80070490 Office 365
3) Tap On “Turn Windows Firewall on or off”
Office Error Code 80070490 Office 365 img 9
Note: If you are logged in as Normal user you may be asked to
Office Error Code 80070490 Office 365 img10
4) Finally Click on “Turn off Windows Firewall (not recommended)” under each of the active network connections.
Office Error Code 80070490 Office 365 img11

Step 2: Proxy Setting

1) Open Control Panel.
Windows 7 : Click On Start and then Select Control Panel from Right Pane.
Microsoft Windows 8 : Press Windows key + R and type “Control” and Press Enter.
Office Error Code 80070490 Office 365 img 9
2) In Search Box Type Internet and Click on “Internet Options”.
3) Select Connections Tab and then Choose LAN Setting.
Office Error Code 80070490 Office 365 img 11
4) Turn off “Use a proxy server for your LAN” if its switched ON.

Step 3: Check System Integrity

1) Press Win + R
Office Error Code 80070490 Office 365 img14
2) Type “cmd” and Press Enter.
Office Error Code 80070490 Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code 80070490 Office 365 img18
Note: If you are logged in as Normal user you may be asked to enter Admin Password

Step 4: Try the installation again

In most case 80070490 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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  • January 1st, 1970

    Posted In: Office 365

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