Hello anonymous user,
Welcome to the Microsoft Q&A platform.
When you say 'I can't delete synapse workspace using portal or PowerShell. I have error 'Conflict':', could you please share complete details of the error message?
As per my test I'm able to successfully delete the Azure Synapse workspace using portal and PowerShell:
Successfully delete Azure Synapse workspace.
Hope this helps. Do let us know if you any further queries.
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