Thanks for your question and using Microsoft Q&A forum.
You cannot access Azure Purview Studio from public network if Public network access is set to Deny in Azure Purview Account Networking. Connecting to Azure Purview from public endpoint when public network access is set to Deny, results an error.
In this case, to launch Azure Purview Studio, you need to
use a machine that is either deployed in the same VNet as Azure Purview portal Private Endpointor use aVM that is connected to your CorpNetin which hybrid connectivity is allowed.
For more info, please refer to: Frequently asked questions (FAQ) about Azure Purview Private Endpoints
Hope this info helps.
----------
Please don’t forget to Accept Answer and Up-Vote wherever the information provided helps you, this can be beneficial to other community members.