Unable to delete pdf files in Windows Explorer [Windows 10]

I'm using Windows 10 with Acrobat Reader DC and I'm unable to delete .pdf files in the windows explorer. I'm getting the error message, that the file is opened in windows explorer.

This only occurs while using the preview pane in the windows explorer. When I disable the preview pane I can delete the file, this is a workaround, but NOT A FIX.

This is really annoying and according to other forums this problem exists for 4+ years now!!!