I am also running into this issue trying to copy a video recording to my NAS. I can copy the same recording to an older backup NAS I have from another vendor or another windows machine. Log doesn't provide any error information.
I did run Data Scrubbing.
F4-223
TOS 6.0.650/BIOS 5.19
Service DateTime Client-Port Event
SAMBA 4/1/2025 10:40 50753 unlinkat /Volume1/public/videos/movies/Barbarosa (1982)/Barbarosa.(1982).ts ok
SAMBA 4/1/2025 10:40 50753 unlinkat /Volume1/public/videos/movies/Barbarosa (1982)/Barbarosa.(1982).ts:Timing.Info:$DATA ok
SAMBA 4/1/2025 10:40 50753 create_file overwrite_if file /Volume1/public/videos/movies/Barbarosa (1982)/Barbarosa.(1982).ts:Timing.Info ok
SAMBA 4/1/2025 10:40 50753 create_file create file /Volume1/public/videos/movies/Barbarosa (1982)/Barbarosa.(1982).ts ok
SAMBA 4/1/2025 10:40 50753 create_file create file /Volume1/public/videos/movies/Barbarosa (1982)/Barbarosa.(1982).edl ok
SAMBA 4/1/2025 10:40 50753 create_file create dir /Volume1/public/videos/movies/Barbarosa (1982) ok
SAMBA 4/1/2025 10:40 50753 mkdirat /Volume1/public/videos/movies/Barbarosa (1982) ok
