Hey Andrew Robinson,
Usually, this behaviour is caused by network issues preventing communications.
I would suggest you to check with your IT team if any firewall might be preventing you to create the extract.
In the meantime, please try these steps:
- Create a new live connection to the data source.
- From the worksheet, right-click the data source and select Extract.
This thread could also help you: Saving issue with data extracts
Lénaïc RIÉDINGER, Global Community Engineer Tableau
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