30088-1021 Office 365

30088-1021 Error Code Office 365 Overview
Difficulty LevelCritical
Resolution:Manual
Cause:Software Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 30088-1021 Error Code in Office 365

Repair Difficulty : Medium

Step 1: Disable Firewall

For Windows 8

1) Press “Win + R” and Type “Firewall.cpl” and Press Enter.
Office Error Code 30088-1021 Office 365 img 8
2) Windows 8 Firewall Window will Open.
Office Error Code 30088-1021 Office 365
3) Click On “Turn Windows Firewall on or off”
Office Error Code 30088-1021 Office 365 img 9
Note: You will need Admin rights to enable or disable Windows firewall.
Office Error Code 30088-1021 Office 365 img10
4) Finally Click on “Turn off Windows Firewall (not recommended)” under each of the active network connections.
Office Error Code 30088-1021 Office 365 img11

Step 2: Temporarily turn off Proxy Settings

1) Goto Control Panel.
Microsoft Windows 7 : Press Win Key and then Click On Control Panel from Right Pane.
Windows 8 : Press Windows Key + Q and Type “Control” And Click on it.
2) Open “Internet Options” In Control Panel Window.
3) Select Connections Tab and then Click On LAN Setting.
Office Error Code 30088-1021 Office 365 img 11
4) Uncheck “Use a proxy server for your LAN” if its already ON.

Step 3: Disable Antivirus

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

Step 4: Try the installation again

In most case 30088-1021 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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