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PavloMyroniuk-5968 asked JeanineZhang-MSFT edited

credssp sec_e_out_of_sequence error

Hi all,
Currently, I'm implementing Kerberos/CredSSP for RDP NLA. I don't use Windows API. I want to implement it on my own.
NegoToken stage of the CredSSP finished successfully. After that, I'm trying to send the public key hash to the target server. But the server replies with sec_e_out_of_sequence error. I don't know why :(
In the end, I recorded traffic from the mstsc and decrypted it. My messages format is identical to the recorded one.
I don't know what I'm doing wrong

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