Warning Remote Host Identification Has Changed!

Question

In my newly installed OS, i got this error while ssh to another machine...

How to clear this....???

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@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
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IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
51:82:00:1c:7e:6f:ac:ac:de:f1:53:08:1c:7d:55:68.
Please contact your system administrator.

jagannath arumugam · Answer

This is because of SSH key is changed... Follow the steps:

open the file which will be shown in that error (/home/USER/.ssh/known_hosts) 
search the SSH key with respective IP-address and remove the whole Key.
now relogin, it will ask for adding the new key, give Yes  and proceed!!!!!

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