problem analysis:
This problem occurs because the configuration of private and public keys in question. Or in the directory C: \ Users \ admin \ .ssh not following public and private keys
I was on the command line to generate public and private keys, they are in the directory is C: \ Users \ admin instead of C: \ Users \ admin \ .ssh, so when used wrong.
Solution:
Generated by GUI, then the generated public key into their own server above, and then run just fine.
GitHub public key generation: