while writing excel file using oracle plsql onto other machine in windows server getting error as invalid file operation?

create or replace directory authfile_test as '\\172:17:89:82\authfile';
I used this directory in my plsql procedure to write excel file on this machine.

Please note that, operating system is windows and 172:17:89:82 is another machine.
but while excution  getting error invalid file operation.

I tried the same thing on same server and succeed to generate file without any error, but whilw trying to create file onto aother server i got  above error.

Please tell me, is there any network setting or permission need to give to solve this problem.
can we create directory with ip address of another  machine ?
for example \\172:17:89:82\authfile';
Please provide sample example and how to give all rights to write file at other machine not at oracle database server.