Side load office add-in?

Hello gjvdkamp​,

You can sideload your Office.js add‑in in Excel 365 by going to Insert → Add‑ins → Get Add‑ins → My Add‑ins, then choose Upload My Add‑in or Add a Custom Add‑in → Add from File and select your manifest. If you don’t see it click Manage My Add‑ins at the bottom of the dialog. For a shared folder you can add the folder under File → Options → Trust Center → Trust Center Settings → Trusted Add‑in Catalogs, restart Excel and then pick it from My Add‑ins → Shared Folder. This is the supported way to add your manifest for testing and development. Support docs: https support microsoft com en‑us office view manage and install add‑ins for Excel PowerPoint and Word 16278816‑1948‑4028‑91e5‑76dca5380f8d