Clearing PuTTY's Cache Of Host Finger Prints On Windows OS Event Sources
Originally Published: 2017-01-30
Last Modified: 2023-09-22
Article Number
Applies To
RSA Product/Service Type: SA Log Collection
RSA Version/Condition: 10.4.X,10.5.X,10.6.X
Issue
Received below error for sasftpagent -v command:
The server's host key does not match the one PuTTY has
cached in the registry. This means that either the server administrator has changed the host key, or you have actually connected to another computer pretending to be the server.
The new rsa2 key fingerprint is:
ssh-rsa 2048 23:59:f5:ca:ca:50:a9:0a:42:08:26:0e:4b:69:0b:56
Connection abandoned.
Cause
Resolution
1. Open the registry (regedit)
2. Go to HKEY_CURRENT_USER\Software\SimonTatham\PuTTY\SshHostKeys
3. Select SshHostKeys , right click and export.(This is for backup)
4. There you should see Putty’s cache of host keys.
The ‘name’ column tells you which key is for which server.
For example, it will have the format of @: [rsa2@22:YourhostIP]
5. Delete the rows that you need.
6. Regenerate the SSH keys and update into LC/VLC
7. Refer below Link to generate the SSH keys
https://community.rsa.com/docs/DOC-53125
