Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi RNKVH My Name is Jen A, Thank you for reaching out to us.
I am sorry for this inconvenience / Do not worry, I will help you sort this issue/Rest assured that I will do my best to assist you with this matter.
In order for you to access those file back was to only reinstall your office back to your device where it was saved.
To begin the installation, depending on your browser, click Open file (in Edge or Internet Explorer), Setup (in Chrome), or Save File (in Firefox).
When you see "You're good to go", choose All done.
Screenshot of "You're good to go" screen and "All done" button signifying Office is finished installation Start using an Microsoft 365 application right away by opening any app such as Word or Excel. In most cases, Microsoft 365 is activated once you start an application and after you click Accept to agree to the Microsoft Office License Agreement.
Download and install or reinstall Office https://support.microsoft.com/en-us/office/download-and-install-or-reinstall-office-2019-office-2016-or-office-2013-7c695b06-6d1a-4917-809c-98ce43f86479#OfficeVersion=Office_2013_for_PC
Let us know how it goes, we're here to help you further if needed. Jen A.