30456-45 Office 365

30456-45 Error Code Office 365 Overview
Difficulty LevelMedium
Resolution:Manual
Cause:File Corruption
Affected Operating Systems
  • Windows 8/8.1
  • Windows 7
  • Windows 10
  • Windows Vista

How To Fix 30456-45 Error Code in Office 365

Repair Difficulty : High

Step 1: Disable Firewall

For Microsoft Windows 7 and later

1) Click Start Button Office Error Code 30456-45 Office 365 Img3 or Simply Press Win key and in right pane Click on Control Panel.
Office Error Code 30456-45 Office 365 img5
2) In Control Panel , type firewall in the search box and click on Windows Firewall.
Office Error Code 30456-45 Office 365 img6
3) Tap On “Turn Windows Firewall on or off”
Office Error Code 30456-45 Office 365 img7
Warning: You will need Admin rights to enable or disable Windows firewall.
Office Error Code 30456-45 Office 365 img5
4) Turn Off Windows Firewall and Press “OK” Button.

Note: Please Activate Microsoft Windows Firewall after Office 365 repair is complete.

Step 2: Reset Internet Explorer Security settings

1. Now, tap on Start.

start
2. Type 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: Check System Integrity

1) Press Win + R
Office Error Code 30456-45 Office 365 img14
2) Type cmd and Press Enter.
Office Error Code 30456-45 Office 365
3) Type “sfc /scannow” and press enter.
Office Error Code 30456-45 Office 365 img18
Note: You will need Administrator rights to run the command.

Step 4: Try the installation again

In most case 30456-45 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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