If you have selected 'Enable Automatic Product Updates' in the HELP menu, then Tableau Desktop connects to while starting up. If access is disconnected, the links on the pane will be broken. If there is no access to these websites, the Discover pane won't show correctly on the home page. Required to register Tableau Prep Builder. For more information, see Bypassing proxy settings (Link opens in a new window) in the MacOS User Guide. MacOS: In the Proxies tab, add the IP address 127.0.0.1 to the excluded local hosts list. Windows: In your Local Area Network (LAN) settings, select Bypass proxy server for local addresses. To activate and run Tableau Prep Builder when a secure web proxy is configured: Port 80 is used for certificate validation (revocation, certificate chain, etc). Requests to the above domains may be on port 80 or 443. Used when activating product keys and registering the product. Note: Beginning with Tableau 9.1, Tableau maps use an SSL connection on port 443. To publish workbooks and data sources to Tableau Online If Tableau doesn't have direct access to the internet, make sure that the domains listed in the following table are allowed by the proxy server on the computer where Tableau is installed and in the network firewall (if there is one). In most cases, the computer where Tableau Desktop or Tableau Prep Builder is installed and the network it is running on are already configured to allow the necessary access.

Tableau uses common ports (80 and 443) to make internet requests.

Click map for internet access