For Windows 11 Work | Openssl

openssl req -x509 -newkey rsa:2048 -keyout selfsigned.key -out selfsigned.crt -days 365 -nodes -subj "/CN=localhost"

[req] distinguished_name = req_distinguished_name req_extensions = v3_req prompt = no openssl for windows 11

Then generate:

Though HPKP is deprecated, computing SPKI fingerprint: openssl req -x509 -newkey rsa:2048 -keyout selfsigned

openssl req -new -key private.key -out request.csr openssl for windows 11

OpenSSL’s s_client is invaluable for debugging HTTPS, SMTP, IMAP, or custom TLS services.

Access Windows files: openssl req -new -key /mnt/c/Users/YourName/key.pem ...