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timb-0073's avatar
timb-0073
Frequent Visitor
3 years ago
Solved

Unable to refresh dataflows - error occurred during the pre-login handshake

I have a number of dataflows, that pull views from Azure SQL Databases. Since 14th Jan 2023 they are failing at random spots during a scheduled refresh with the error message:   Microsoft SQL: A co...
Dataflow
  • Anonymous's avatar
    Anonymous
    3 years ago

    Hi timb-0073 ,

    Sorry I am late.

    It a known issue.Engineers are working on repairs.I would update here as soon as possible if there is any update about it.

     

    Best Regards
    Community Support Team _ Polly

    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

itchyeyeballs's avatar
itchyeyeballs
Icon for Impactful Individual rankImpactful Individual
3 years ago

Seems like there are dataflow issues.

Our existing dataflows seem to be working ok, however when I create a new one it allows me to browse to the (on prem SQL server) DB table and view the data in preview but then fails when I save the dataflow and click refresh data.

Error is - Credentials are required to connect to the SQL source
Credentials are correct (it uses the saved credentials once I enter the basic database details)