Error "This file is not in a recognizable format" When Activating the Tableau Desktop Offline Activation.tlf File

Published: 25 Aug 2022
Last Modified Date: 26 Aug 2022


Error when double-clicking "activation.tlf" file to activate Tableau Desktop offline:

 "This file is not in a recognizable format. See the Help documentation for a list of the supported file types.".


  • Tableau Desktop
  • MacOS 11.x


Option 1

The "activation.tlf" file may not be associated with Tableau Desktop. Right click on the activation file and select Open With > Tableau Desktop.

Option 2

The activation.tlf file may be blocked by anti-virus software. Please refer to this Knowledge Base and set your anti-virus software to exclude the appropriate related processes and folders.



Activation.tlf file is blocked by anti-virus software.
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