Error code 0x302 Solution- Microsoft Online Support
Windows 11
First, Click Start >In search type bar >Control Panel > Programs > Programs and Features. After that, Choose the Office program to repair, and then click on the Change button. Now do one of the following:

Microsoft Office 2019 & 2021 click Repair > Continue. In Office 2019 & 2021 click on the Quick Repair button.

You should restart your system after the repair is complete.
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