Could you be a bit more specific. What exactly isn't working? I'm using Win10 1903 and the most current version of XD, Drag and drop works fine. It might be the file type you are trying to drag and drop.
For example a png or jpg should work fine, but an ai or psd file would need to be imported.
Sorry to hear that you're facing trouble with drag and drop fucntionality in Adobe XD. In addition to the information asked by Sjaani, could you please share some more details about the situation? I would like to know where are you dropping the elements? Would you mind sharing the gif or video of the workflow? Are you on the latest vesion of Adobe XD?