May 2021 Gateway Error: SharePoint: Request failed: The underlying connection was closed.

Some where around May 13th, all of our datasets that connect to SharePoint O365 started failing with the following message: Unable to connect to the data source undefined. (Details below). On May 16t...

Gateways

Anonymous

Not applicable

5 years ago

Not sure if this helps or not but out of the 3 reports that are still consistently failing, all of them can be manually refreshed each morning but then continue to fail on scheduled refreshes. When I say manual I mean clicking on the fresh icon on the dataset from Power BI Service.

Is something different happening on a manual refresh vs a scheduled refresh? Are the connections not being closed?

Also what does this error actually mean: SharePoint: Request failed: The underlying connection was closed: An unexpected error occurred on a send

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