This happens if the server sees something out of the ordinary from the program that could be something like a hacking attempt or blank session response. There are some tips and tricks on how to make sure your browsers are set up correctly to ensure this happens less often.
https://accountants-community.intuit.com/articles/1615898-mfa-resolving-the-i-m-not-a-robot-message
I even get it myself every few weeks.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Accept as solution" and then just changing the Accept as solution to Mark as Best Answer, mine gets cutoff, so it is too long. I changed mine to the following and it fits. -->**Say "Thanks" by clicking the thumb icon in a post
**Click "Mark as Best Answer " to mark the post that answers your question.
