NTFS can see FAT32 and read it but a FAT32 drive cannot see a NTFS drive
Have you setup share on any folders on pc2 your FAT32 computer, right click on folder you want to make available to other computer and look for sharing and security and set share level
easiest option is to do as I have to due to NTFS/FAT32 problem and move what ever files you want to share between computers into the FAT32 computers shared file using copy paste