30088-28 Office 365

30088-28 Error Code Office 365 Overview
Difficulty LevelVery High
Resolution:Manual
Cause:System Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 30088-28 Error Code in Office 365

Repair Difficulty : High

Step 1: Disable Microsoft Windows Firewall

For Microsoft Windows 8
1) Press Windows key + Q. A search box will show up on right pane.
Office Error Code 30088-28 Office 365 step 6
2) Open “Windows Firewall” from Control Panel Window
Office Error Code 30088-28 Office 365 step 7
Office Error Code 30088-28 Office 365
3) Click On “Turn Windows Firewall on or off”
Office Error Code 30088-28 Office 365 img 9
Note: If you are logged in as Normal user you may be asked to enter Admin Password
Office Error Code 30088-28 Office 365 img10
4) Click on “Turn off Windows Firewall (not recommended)” under each of the active network connections.
Office Error Code 30088-28 Office 365 img11

Step 2: Proxy Setting

1) Open Control Panel.
Microsoft Windows 7 : Click On Start and then Select Control Panel from Right Pane.
Windows 8 : Press Windows key + R and type “Control” and Press Enter.
Office Error Code 30088-28 Office 365 img 9
2) In Search Box Type Internet and Click on “Internet Options”.
3) Select Connections Tab and then Press LAN Setting.
Office Error Code 30088-28 Office 365 img 11
4) Turn off “Use a proxy server for your LAN” if its already ON.

Step 3: Temporarily Disable Antivirus

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

Step 4: Try the installation again

In most case 30088-28 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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