Error Code 30045-44 is referred to be a problem with the broken registry on your system as per this Microsoft Office for windows 11 ,Windows 10 users. If you get an error that contains 30145-44 and error 30045-4 office when you try to install Office, there are many things you can try to fix the problem.
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https://www.officelivesupport.....com/error-code-30045

The Unlicensed Product Microsoft Office Error is common in all versions of office like Microsoft 365, Office 2021,Office 2019, Office 2016. To use the core applications in any edition, you need to activate the proper method for each edition. When you open Microsoft Word, Excel, Outlook or PowerPoint , you will see a message that says: “Unlicensed Microsoft Office.”


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https://www.officelivesupport.....com/unlicensed-produ

If you’ve encountered error code 30015-13 while using Microsoft Office, you’re not alone. This error typically occurs during the installation or update process and can be a roadblock in accessing essential Office applications. In this article, we’ll explore the possible causes of error 30015-13 and provide step-by-step solutions to help you resolve it.
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https://www.officelivesupport.....com/office-installat

Microsoft Office Error code 0-2031 this usually occurs if another installation, update, or uninstall was running before you tried to install Office.
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https://www.officelivesupport.....com/microsoft-error-

Usual causes for this Error Code 80072efd are communication failure over the Internet with Microsoft update servers. Firstly, I will suggest you to do Windows Troubleshoot for windows update Error Code 80072efd. After that, disable the proxy internet connection and try again to install the windows update.
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https://www.officelivesupport.....com/windows-update-e