They are stored in Windows registry by default, unless you've switched to INI file. The INI file is placed in the WinSCP installation folder.

I had to format my computer and I forgot about my stores sessions for winSCP. Fortunately, I backed up the drive before formatting on another drive. I reinstalled winSCP but my sessions aren't there anymore.

Where are stored sessions placed on the hard drive so I can take them from my backup and put it in my hard drive again so I don't have to put all those sessions back in again?

Thanks.