DataSource.Error: SharePoint: Request failed: The underlying connection was closed: An unexpected er

"DataSource.Error: SharePoint: Request failed: The underlying connection was closed: An unexpected error occurred on a send."

Hi all,

I've returned from a few days away and all of my reports in desktop with files residing on SharePoint are now receiving variations of the above error message.

I've tried editing credentials and it has no effect.

I've tried connecting to same data sources via a new query and no effect.

There is no impact on published reports, only in desktop.

Desktop Version: 2.111.590.0 64-bit (November 2022)

SharePoint in Microsoft 365

Any ideas on how to fix this?