In other words, if the client computer has the security update installed but the server computer was not updated with the security update (or vice versa), the remote connection was unsuccessful and user received above-mentioned error message. The patch updated CredSSP authentication protocol and Remote Desktop clients for all affected platforms.Īfter installing the update, patched clients were not able to communicate with unpatched servers. To patch this security risk, Microsoft released a security update addressing the vulnerability by correcting how CredSSP validates requests during the authentication process. So any application that depends on CredSSP for authentication was vulnerable to this type of attack. An attacker who successfully exploits this vulnerability could relay user credentials to execute code on the target system. Recently Microsoft found that a remote code execution vulnerability (CVE-2018-0886: encryption oracle attack) exists in CredSSP versions. You can fix the ‘An authentication error has occurred, This could be due to CredSSP encryption oracle remediation’ error by using Registry or Group Policy Editor. This could be due to CredSSP encryption oracle remediation.Īs you can see from the image above, the error message is caused by the CredSPP Encryption Oracle Remediation. Remote computer: Computer_Name or IP_Address When the Remote Desktop Connection authentication fails, you’ll receive the following error message In this post, we will identify some potential known causes that can trigger the error and then provide the possible solutions you can try to help remediate this issue. If scp on Linux box throws error "Administratively disabled." while trying to uploading to or downloading from cisco switch, that indicates scp is not enabled.If when you try to use the Remote Desktop Connection between two Windows computers and you receive the error message – Remote Desktop Connection error, An Authentication error has occurred, The Function requested is not supported, then this post is intended to help you. Where scp15 is a privilige 15 level user on switch with ip 192.168.13.14 ( WS-C2960-24PC-L) ~]$ scp test-file.txt 100% 19 9.4KB/s 00:00Īnd while logged into linuxserver downloaded a file from the switch ~]$ scp new-test-file.txt In another situation while logged into linuxserver uploaded a file to WS-C2960-24PC-L switch In case if the command with // does not work on specific cisco ios then command with / can be used. Sending file modes: C0664 19 textfile.txtġ9 bytes copied in 6.808 secs (3 bytes/sec) While logged into cisco switch, I successfully pulled file from Linux scp server to its bootflash: with out using double slash for the file path (the first set of double slash // are still required) copy ~]$ ~]$ ls -a /srv/home/user26/textfile.txt I ended up on this post while trying to find the solution.
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