4 of 4 people found this helpful
Please go through this link Alternate Downloads Site | Tableau Software where you can find all versions and builds of Tableau Desktop including 32bit & 64bit along with Windows and Mac OS versions.
There you can find the setup file download link for 9.3 Tableau Desktop.
1 of 1 people found this helpful
As mentioned by Kaushik Mallampati, you can download the required tableau desktop version from the above link and there is no such thing called upgrade on tableau desktop.
The term "upgrade" on to Tableau desktop is just to download the latest version of tableau desktop released and you can simultaneously you multiple versions of Tableau desktops on single desktop computer.
when you install the latest version of tableau Desktop. All the workbooks which you have on your PC or Desktop gets automatically upgraded to the latest version when you try individually opening the workbook.