The help doesn't say that REN supports NTFS streams and apparently it doesn't. It would be nice if it did.
Note that while the help doesn't mention it, "DO x in @file" does support NTFS streams.
v:\> touch /c test.txt 2019-05-18 12:59:21.718 V:\test.txt v:\> echo foo > test.txt:stream v:\> d /: test* 2019-05-18 12:59 0 test.txt 5 stream:$DATA v:\> type test.txt:stream foo v:\> ren test.txt:stream test.txt:stream1 V:\test.txt:stream -> V:\test.txt:stream1 TCC: (Sys) The parameter is incorrect. "V:\test.txt:stream" 0 files renamed 1 failed