Until yesterday, my W10 laptop had no trouble accessing the drives attached to my pi (set up using "Map Network Drive"). The pi had to be rebooted (not a problem, done it before), but this time none of the drives could be accessed. So decided to delete the connections and start again. Checked the pi's IP address, it used to be something sensible like 192.168.0.10, but now it's something like 169.254.251.52, and when I enter that into the "Map network drive" box, it doesn't find anything. I know I can transfer stuff using a pendrive, but I really liked having those attached drives to use in "normal" folders. Pi is LibreElec/Kodi.
If you need more information, let me know how to get it for you and thy will be done.