I have a Fedora Workstation 39 host machine with Oracle VirtualBox 7 installed.I've created a virtual machine running Windows Server 2022 using Oracle VirtualBox. I can successfully ping the Windows Server from the Fedora Linux host machine using SSH, demonstrating basic connectivity.

However, the challenge arises when attempting to establish passwordless authentication using public key. Despite following various tutorials from YouTube and other sources, the passwordless authentication setup is not functioning as expected. The objective is to SSH into the Windows Server 2022 virtual machine from the Fedora host without being prompted for a password.

any help will be highly appreciated.

You are, again, asking for help with a Windows server; this is not Linux related. Asking on a Linux forum about Microsoft Windows problems isn't going to get you a lot of help...however, if you searched for things like "windows server 2022 passwordless" you'd find things like:
https://learn.microsoft.com/en-us/wi..._keymanagement

...a guide from Microsoft about such things. How you get Microsoft to accept your key and where you store it on Windows is a Windows question. Have you tried using the fairly standard ssh-copy-id command on Linux???

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Thanks for the help. I have tried this support article Key-based authentication in OpenSSH for Windows
without any luck. I have also followed this video : SSH To Windows Using Public Key. But unfortunately its also not working. May be its something to do with my host machine. I have multiple authentication key in my ssh folder. I guess I might have to edit the config file. I will keep trying. Thanks for your suggestions.