Hum, you may have upgraded pip. If So, click on the script "make winpython portable" to go back to normal

thanks for soon answer
but there is only
make_winpython_movable.bat
do you mean
make_winpython_movable.bat
instead of
"make winpython portable"

where to run it
on original computer or on computer where winpython was copied
by the way
jupyter-notebook.exe can not be run neither
'"D:\WINPYTHON_N1\WPy64-3741\python-3.7.4.amd64\scripts\jupyter-notebook.exe"' is not recognized as an internal or external command,

operable program or batch file.

D:\WINPYTHON_N1\WPy64-3741\notebooks>

PS the way these are all scripts what I see
e:\WINPYTHON_N1\WPy64-3741\scripts\make_cython_use_mingw.bat
e:\WINPYTHON_N1\WPy64-3741\scripts\make_cython_use_vc.bat
e:\WINPYTHON_N1\WPy64-3741\scripts\make_winpython_fix.bat
e:\WINPYTHON_N1\WPy64-3741\scripts\make_winpython_movable.bat
e:\WINPYTHON_N1\WPy64-3741\scripts\make_working_directory_be_not_winpython.bat
e:\WINPYTHON_N1\WPy64-3741\scripts\make_working_directory_be_winpython.bat

do you have detailed description about them ?

so
where to run it
on original computer or on computer where winpython was copied?

on computer where winpython was copied

my bad: it's ./scripts/make_winpython_movable.bat