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An error occurs when dragging the contents of a cell (see screenshot)
By dragging you mean copy&paste or just dragging the mouse in remote control? Can you translate the message please?
@tobydox "Failed to free up clipboard space. It may be in use by another application." Only when redirecting. Win Srv 2012 R2, Office 2016
The only workaround I can find is to stop the Veyon service. This appears to be a bug.