Cannot add Schedule Refresh with Postgre SQL Server on Cloud PowerBI Service

Hi pmthu ，

 Please check the valid status of credentials in dataset or under the gateway,update your gateway to the lastest version,and check if you open the port 80.

Similar question refer:

https://community.powerbi.com/t5/Service/Failed-to-update-data-source-credentials-for-postgreSQL-server/td-p/854149 

https://stackoverflow.com/questions/12758727/a-connection-attempt-failed-because-the-connected-party-did-not-properly-respond 

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Best Regards

Lucien