OpenSSL Certificate (Version 3) with Subject Alternative Name

Question

I\'m using the OpenSSL command line tool to generate a self signed certificate. It seems to be working correctly except for two issues. I can\'t get it to create a .cer with a S

Answer 1

I know this thread is a little old but just in case it works for anyone on windows, check that the file is UTF-8 encoded, in my case I was getting an error indicating there was an error with the .cnf file, so I opened it on Notepad++ set the file encoding to UTF-8, saved, and ran the openssl command again and it made the trick.