Connect to data only offering My workspace and three others on Select a workspace drop down list. I have more than that when I look at workspaces in Power BI service.
I had changed my missing workspace so that Members Can Edit - I was already an Admin, but that apparently is not enough to make the workspace appear. At first, it made no difference, but after about an hour, the workspace showed up in my list. Note that I closed and re-opened Excel - not sure if that was a necessary step.
