I was facing Authentication failed issues when accessing flow for first time in my Office 365 developer account. so i followed the following blog https://flow.microsoft.com/en-us/blog/known-issue-login-troubles/ but was not able to resolve, so i decided to open ticket with MS. To cut this story short, do the following At the Step 4 in the above blog, select “Microsoft Application” and  paste “7df0a125-d3be-4c96-aa54-591f83ff541c”, remove any spaces when … Continue reading Authentication Failed https://service.flow.microsoft.com/