Excel Desktop App hangs when attempting to open documents from SharePoint to edit

User attempts to open Excel Documents saved in SharePoint by selecting Edit in Desktop App. As the Excel Desktop App begins to open a message displays stating: We have opened this document in Microsoft Excel in your computer. However, the Excel App just hangs without fully opening (see Screenshot).

No problem detected when opening the Excel Desktop app directly, Desktop App opens freely. Excel MS365 is up-to-date version 2609 build 16.0.20430 64 Bit (Before reinstall).

I have uninstalled the MS365 Office packet and reinstall it directly from the User's Office Portal, to no avail.