Recently our workstations were patched against the CredSSP vulernability, and as work around until we can get the servers patched, we've deployed a GPO disabling network level authentication. Also solved on PC with windows 7 with 3 method. Even though not all RDP servers are Windows servers, we have seen similar vulnerabilities shared between the different implementations of an RDP server, so Windows is not the only potential target. All the above mentioned solutions worked for me on my company network. Edge Browser and Store Stopped Working after Windows 10 1809 Update. c) If both client & server are patched with the default setting (Mitigated), RDP will work in a secure way. If you can’t find the key, you will need to create it. You will need a V2 API key and a secret in order to use the API. Can you advise me something? He is responsible for IT upkeep for the company and we have not received a single response from him about [site name]'s IT issues. We are at a critical point where we are on the verge of not … The issue is Microsoft released a security update to address vulnerabilities for the Credential Security Support Provider protocol (CredSSP) used by Remote Desktop Protocol (RDP) connections for Windows clients and Windows Server. A serious vulnerability was found in CredSSP protocol which could impact the security of both the server and the client. Install all the updates specifically related to CVE-2018-0886. Let’s go through some resolutions to this problem. Reach him at Twitter @usmank11, Windows 10 home not work with solution 2. b) If the client is not patched while the server is updated, RDP can still work. Thanks you for this information. Md Farid Uddin Kiron. The function requested is not supported. In this video we will see how to fix “An authentication error has occurred. trusted_device_token Thank you! But the session will be exposed to the attack. Regards. If you are running Remote Desktop Protocol in your network and allow connections to your server, you should probably fix this error immediately. Your first step is to let RDP through the firewall. The same can be achieved through Windows Registry. Although you can use any of the above mentioned methods to resolve this issue of RDP Authentication Error Function Requested Is Not Supported, I recommend that you should either use Solution 1 (install latest Windows updates) or Solution 2 (using local group policy) for the resolution. My name is vinod kumar kurmi I am a hardware and network engineer who loves to write blogs in IT field, but I do not have a Profession writing blogs, but I like to write blogs in IT field, I write blogs in IT field like networking topology security tools Also write blogs related to cctv door access laptop repairing software installation and IT Windows uses CredSSP protocol (Credential Security Support Provider) for authenticating clients on the RDP servers. Errors presented by the Remote Desktop Client with the April 17, 2018 patch (KB 4093120 ) Unpatched pre-Windows 8.1 and Windows Server 2012 R2 clients paired with servers configured with “Force Updated Clients” For detailed instructions see Create a CloudGuard API Key Operating system TSpkg.dll version with CredSSP update Operating system TSpkg.dll version with CredSSP update CredSSP update; Windows 7 Service Pack 1 / Windows Server 2008 R2 Service Pack 1 6.1.7601.24117 KB4103718 (Monthly Rollup) This is running on a IIS web server with Windows Integrated authentication. 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