PuTTY: Backup saved sessions

On Windows, PuTTY's configuration is stored in the registry. It can be found under:

HKEY_CURRENT_USER\Software\SimonTatham\PuTTY\Sessions

Note that Simon Tatham is the author of PuTTY. So don't replace it with your username.

You can export all settings with this command:

regedit /e "%userprofile%\desktop\putty.reg" HKEY_CURRENT_USER\Software\SimonTatham

Ref:
How to export PUTTY Sessions list? - Stack Overflow