I get this error message ALL the time when trying to save anything to Tableau public, and the only way "around" it is to shut down Tableau Public and reopen, which means I lose all of my work. This time, when trying to edit a connection to a workbook, I seem to not be able to save the new workbook at all, no matter how many times I reopen and try again. This is super frustrating. What do I do?
Can you advise what version of Tableau Public you're using? You should be able to find the version going to Help-> About Tableau
If you're not using the most recent version, I recommend upgrading and seeing if that resolves the issue.