I took a look at the document you provided and noticed the error and the steps provided by Bug: Unable to sign in to ArcGIS Online from ArcGIS Pro using Google credentials , but after those steps you encountered a Pro error pertaining to your account is a public account. Could you confirm that the login account being utilized is an account that is apart of an organization?
Hi, I have the same issue while logging into ArcGIS Pro. I tried https://support.esri.com/en/technical-article/000022456 and edited registry. Currently I have ArcGIS Pro 2.5 and I installed 2.5.1 and 2.5.2 patches as well but still not working. Any idea what else should I try ? I have ArcGIS for Personal Use License.
