30027-4 Office 365

30027-4 Error Code Office 365 Overview
Difficulty LevelVery High
Resolution:DLL Issue
Cause:File Corruption
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 30027-4 Error Code in Office 365

Repair Difficulty : Medium

Step 1: Disable Microsoft Windows Firewall

For Windows 8
1) Press Win Button and Type Control Panel and Press Enter.
Office Error Code 30027-4 Office 365 step 6
2) Open Windows Firewall from Control Panel
Office Error Code 30027-4 Office 365 step 7
Office Error Code 30027-4 Office 365
3) Press “Turn Windows Firewall on or off”
Office Error Code 30027-4 Office 365 img 9
Note: You will need Administrator rights to disable Windows firewall.
Office Error Code 30027-4 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 30027-4 Office 365 img11

Step 2: Temporarily turn off Proxy Settings

1) Goto Control Panel.
Windows 7 : Press Win Key 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 Press LAN Setting.
Office Error Code 30027-4 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 installation is going on. Check antivirus vendor website for more details.

Step 4: Try the installation again

In most case 30027-4 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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