Wrote up my full Databricks Free Edition setup experience, including this signup bug, here: https://medium.com/@kapadiadarshil25/setting-up-databricks-free-edition-signup-gotchas-catalogs-and-your-first-table-158c57dd9cbd
Adding one more workaround that isn't mentioned above. In my case, the existing 401-error fixes (incognito, official link, contact support) didn't help. What finally worked: signing up with a Gmail address that has no dots.Gmail treats first.last@gma...
I hit this same error last week and finally got past it. Sharing what worked, since the existing replies didn't cover this specific cause.What worked for me:Used Edge in InPrivate / incognito mode (Chrome works too if you fully clear cookies first)Sw...