80072-78 Office 365

80072-78 Error Code Office 365 Information
Difficulty LevelVery High
Resolution:DLL Issue
Cause:Software Level Conflict
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 80072-78 Error Code in Office 365

Repair Difficulty : Medium

Step 1: Disable Firewall

For Windows 7 and later

1) Click Start Button Office Error Code 80072-78 Office 365 Img1 and then Click on “Control Panel” icon.
Office Error Code 80072-78 Office 365 img5
2) In Control Panel , Click on “Windows Firewall”.
Office Error Code 80072-78 Office 365 img6
3) Click On “Turn Windows Firewall on or off”
Office Error Code 80072-78 Office 365 img7
Note: You will need Admin rights to enable or disable Windows firewall.
Office Error Code 80072-78 Office 365 img5
4) Finally Click on “Turn off Windows Firewall (not recommended)” under each of the active network connections.

Warning: You can activate Microsoft Windows Firewall after Office 365 repair is complete.

Step 2: Reset Internet Explorer Security settings

1. Now, tap on Start.

start
2. Enter the command “inetcpl.cpl” and click OK.
3. Click on the “Security” tab.

inetcpl security
4. Click “Reset all zones to default level” button at the bottom of the window.
5. Click OK button.

Step 3: Temporarily Disable Antivirus

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

Step 4: Try the installation again

In most case 80072-78 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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  • Posted In: Office 365