change date of files in command line windows 10 64 bit

How about a quick PowertShell script, disguised as batch for easier handling?
Save as touchPS.cmd or Whatever.cmd, run as
touchPS J:\*.txt

@PowerShell.exe -Command "$t = Get-Date; Get-ChildItem -Path '%~1' -File | ForEach-Object {$_.FullName + ' [' + $_.LastWriteTime + ' --> ' + $t + ']'; $_.LastWriteTime = $t}"

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If you really want a version of the touch utility for Windows that runs on 64 bit you can grab it out of the GIT portable distribution on this page.  See the "64-bit Git for Windows Portable." link.  I have GIT installed and find it useful to have a number of the unix utils available from its installation, but you don't have to install it to use some of the utils.  Just extract the files to a folder and then poke around in the bin subfolders (like usr/bin) and grab the touch.exe program.

• Git - Downloading Package

>C:\_pf\Git\usr\bin\touch.exe --version
touch (GNU coreutils) 8.31
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Paul Rubin, Arnold Robbins, Jim Kingdon,
David MacKenzie, and Randy Smith.


>C:\_pf\Git\usr\bin\touch.exe --help
Usage: /usr/bin/touch [OPTION]... FILE...
Update the access and modification times of each FILE to the current time.

A FILE argument that does not exist is created empty, unless -c or -h
is supplied.

A FILE argument string of - is handled specially and causes touch to
change the times of the file associated with standard output.

Mandatory arguments to long options are mandatory for short options too.
  -a                     change only the access time
  -c, --no-create        do not create any files
  -d, --date=STRING      parse STRING and use it instead of current time
  -f                     (ignored)
  -h, --no-dereference   affect each symbolic link instead of any referenced
                         file (useful only on systems that can change the
                         timestamps of a symlink)
  -m                     change only the modification time
  -r, --reference=FILE   use this file's times instead of current time
  -t STAMP               use [[CC]YY]MMDDhhmm[.ss] instead of current time
      --time=WORD        change the specified time:
                           WORD is access, atime, or use: equivalent to -a
                           WORD is modify or mtime: equivalent to -m
      --help     display this help and exit
      --version  output version information and exit

Note that the -d and -t options accept different time-date formats.

GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>
Full documentation <https://www.gnu.org/software/coreutils/touch>
or available locally via: info '(coreutils) touch invocation'

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»bp

thanks all for help

SOLVED MY OLD DOS ISSUE