I was previously aware that I needed to be using the 2025.1 version of Tableau desktop Due to the servers we are using. But one morning I couldn't log on to the server, and mistakenly thought it could be because I was using an older version. So I downloaded the newest version of tableau desktop 2026. Unrelated - The server issue was fixed and i then opened my tableau workbook in the 2026 version and published it , there was a message that some features may not be available etc. but i published anyway. I have since deleted and uninstalled the 2026 version, reopened in 2025.1 and re-published. However now when the dashboard is viewed online there is an extremely long wait time on one of my pages containing a map, making it almost unusable online and when it does load the formatting of the map is not the same and doesn't interact in the same way it does in the desktop. My assumption is that because i opened and published the dashboard workbook file it has been in someway permanently affected, even though I am back using the 2025.1 compatible version of the application. Is there any possible fix for this without Making a brand new workbook and creating from scratch (this isn't an option due to the time it would take because of the size of the workbook)
#Tableau Desktop & Web Authoring
It does sound like something may have changed in the workbook when it was opened and published from 2026. I’d check the map sheet’s data source, extracts, and any newer features that may have been introduced during that save. Hopefully there’s a way to revert or clean up those changes without having to rebuild the whole workbook.
