Problem installing parallel package

Tried to install on a Windows 10 box under Octave 6.3

>> pkg install -forge parallel
C:/PROGRA~1/GNU: line 1: [Paths]: command not found
C:/PROGRA~1/GNU: line 2: Octave/Octave-6.3.0/: No such file or directory
C:/PROGRA~1/GNU: line 3: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 4: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 5: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 6: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 7: OctaveOctave-6.3.0\binqt.conf: No such file or directory
configure: WARNING: No working fork(), no uname(), or no error.h found. On such platforms, notably Windows and macOS,
the remote Octave server will not be built. The functions for accessing a remote Octave server are not affected by t
his and may still be built, as well as the functions for local parallel execution.
C:/PROGRA~1/GNU: line 1: [Paths]: command not found
C:/PROGRA~1/GNU: line 2: Octave/Octave-6.3.0/: No such file or directory
C:/PROGRA~1/GNU: line 3: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 4: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 5: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 6: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 7: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 1: [Paths]: command not found
C:/PROGRA~1/GNU: line 2: Octave/Octave-6.3.0/: No such file or directory
C:/PROGRA~1/GNU: line 3: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 4: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 5: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 6: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 7: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 1: [Paths]: command not found
C:/PROGRA~1/GNU: line 2: Octave/Octave-6.3.0/: No such file or directory
C:/PROGRA~1/GNU: line 3: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 4: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 5: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 6: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 7: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 1: [Paths]: command not found
C:/PROGRA~1/GNU: line 2: Octave/Octave-6.3.0/: No such file or directory
C:/PROGRA~1/GNU: line 3: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 4: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 5: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 6: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 7: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 1: [Paths]: command not found
C:/PROGRA~1/GNU: line 2: Octave/Octave-6.3.0/: No such file or directory
C:/PROGRA~1/GNU: line 3: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 4: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 5: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 6: OctaveOctave-6.3.0\binqt.conf: No such file or directory
C:/PROGRA~1/GNU: line 7: OctaveOctave-6.3.0\binqt.conf: No such file or directory

make: *** [Makefile:192: pconnect.o] Error 127
make: Entering directory '/tmp/oct-OeW56l/parallel-4.0.1/src'
CXX="g++" CXXFLAGS=" -IC:/PROGRA~1/GNU\ Octave/Octave-6.3.0/mingw64/include -Wno-int-to-pointer-cast -Wno-deprecated-
declarations" C:/PROGRA~1/GNU Octave/Octave-6.3.0/mingw64/bin/mkoctfile-6.3.0.exe -c pconnect.cc
make: Leaving directory '/tmp/oct-OeW56l/parallel-4.0.1/src'

error: pkg: error running 'make' for the parallel package.
error: called from
configure_make at line 110 column 9
install at line 196 column 7
pkg at line 568 column 9

any help would be appreciated

This looks like a problem with spaces in the Octave installation path. Please file a bug report and until this is fixed, you can install Octave under “C:\Octave” instead of “C:\Program Files”, this works for me under MS Windows 10, Octave 6.3.0.

Please note, that there is a general limitation with the cluster server on MS Windows:

The server for cluster execution is installed at GNU/Linux, but not at some other operating systems, e.g. not at Windows or macOS. The client functions for cluster execution should be installed at all systems, though.