In GUI? Or in scripting?

In the GUI, you just check and accept the new key, whenever the change happens. You can also add an additional key upfront to registry, but there's no user friendly way to do that, if the key is not active yet.

In the scripting, you can use a list of semicolon separated host key fingerprints:
https://winscp.net/eng/docs/scriptcommand_open#hostkey

Is WinSCP capable of storing multiple host key?

The Admin provided new host key but it will be activated after a week and we still need to use the old host key. How can I upload the new key while still using the old host key?

Please read FAQ:
https://winscp.net/eng/docs/faq_hostkey

ykmohank wrote:

the location where i can see the generated log file

Standard is path of used .exe file.

ykmohank wrote:

what i need to do to automate my task of sending files to the targeted server.

You have to generate a script and call this...
read help https://winscp.net/eng/docs/scripting
and examples https://winscp.net/eng/docs/scripting#example

Hi,
Thanks for you reply,But can you please guide me about the location where i can see the generated log file.
And once i got the host key what i need to do to automate my task of sending files to the targeted server.

Please help me i am very new to WinSCP and SFTP.

Try to connect server using WinSCP.exe as graphical interface with SFTP-protocol and port 22. You don't have to use correct login data and after this scan generated log file. This contains a line like

and the following line contains host key, e.g.

The host key are 16 blocks separated by : in example before

Hi,

I have to automate a task of sftp few files using winscp.
While looking at the command syntax it was mentioned that i need to have host key to achieve this.
Can someone please help me on how can i get this one.