80071A90 Office 365

80071A90 Error Code Office 365 Overview
Difficulty LevelVery High
Resolution:Manual
Cause:Software Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 80071A90 Error Code in Office 365

Repair Difficulty : High

Step 1: Disable Windows Firewall

For Windows 8
1) Press Win Button and Type “Control Panel” and Press Enter.
Office Error Code 80071A90 Office 365 step 6
2) In Control Panel Window, Click on “Windows Firewall”.
Office Error Code 80071A90 Office 365 step 7
Office Error Code 80071A90 Office 365
3) Tap On “Turn Windows Firewall on or off”
Office Error Code 80071A90 Office 365 img 9
Note: You will need Administrator rights to enable or disable Windows firewall.
Office Error Code 80071A90 Office 365 img10
4) Under “Home or Work Network Location Settings” And “Public Network Location Settings” Click On “Turn Off Windows Firewall”
Office Error Code 80071A90 Office 365 img11

Step 2: Temporarily turn off Proxy Settings

1) Open Control Panel.
Microsoft Windows 7 : Click Start and then Select Control Panel from Right window.
Windows 8 : Press Windows key + R and type “Control” and Press Enter.
Office Error Code 80071A90 Office 365 img 9
2) In Control Panel Window Click on “Internet Options”.
3) Click On Connections Tab and then Choose LAN Setting.
Office Error Code 80071A90 Office 365 img 11
4) Turn off “Use a proxy server for your LAN” if its switched ON.

Step 3: Disable Antivirus

– Open Your Antivrus
– 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 80071A90 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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