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KB3039066 Office 365

KB3039066 Error Code Office 365 Overview
Difficulty LevelMedium
Resolution:DLL Issue
Cause:Malwares/Virus
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix KB3039066 Error Code in Office 365

Repair Difficulty : Medium

Step 1: Disable Microsoft Windows Firewall

For Microsoft Windows 7 and later

1) Press “Win + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code KB3039066 Office 365 img7
2) Windows Firewall Window will Open.
3) Tap On “Turn Windows Firewall on or off”
Office Error Code KB3039066 Office 365 img7
Note: If you are logged in as Normal user you may be asked to
Office Error Code KB3039066 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 repair is complete.

Step 2: Proxy Issue

1) Goto Control Panel.
Windows 7 : Click Start and then Click On Control Panel from Right window.
Windows 8 : Press Windows Key + Q and Type “Control” And Click on it.
2) In Control Panel Click on “Internet Options”.
3) Click On Connections Tab and then Click On LAN Setting.
Office Error Code KB3039066 Office 365 img 11
4) Uncheck “Use a proxy server for your LAN” if its already ON.

Step 3: Temporarily Disable Antivirus

– Open Your Antivrus software
– Disable it till the Office 365 repair is going on. Check antivirus vendor website for more details.

Step 4: Try the installation again

In most case KB3039066 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