"The requested resource is in use" when I try to copy exported PDFs to my PC


I am trying to use my Boox Max 2 to sign and date PDFs and then export the annotations and copy the exported PDFs to my PC, but whenever I connect the Max2 to my PC and try to copy over the newly exported annotated PDFs I get a “resource is in use” error. I have closed the documents in Neo Reader, and I have even turned off all the applications, but this still happens. The error goes away if I wait 30 minutes or plug and unplug the Max2 5-7 times, but obviously that’s very annoying. Anybody know how to fix this?