Clear putty cache on windows

This is applicable to putty on windows. The way to clear putty's RSA (host) fingerprint cache.

1. Open the registry (start> run > regedit)
   
2. Go to HKEY_CURRENT_USER\Software\SimonTatham\PuTTY\SshHostKeys Here you will find putty’s cache of host keys. The ‘name’ column tells you which key is for which machine. For example, it will have the format of @: [dsa@22:192.168.1.159]. Type will be REG_SZ and data will be the key related values
   
3. Delete the rows that you need .

That’s all !!! Have fun..