[Windows Error] required function not supported, this may be due to CredSSP encryption Oracle fix

Release Notes:Server version: Windows Server R2 SP1 (virtual machine) client version: Windows 10 Home Edition Problem Description:When using Windows Remote Desktop Connection, the error described below, 1, is not resolved after reconfiguring the credentials. Figure 1 The first time to search the Internet to find the answer, most of the posts are around two solutions, both solutions did not solve my problem, posted for reference only: 1. Open the local Group Policy manager via Gpedit.msc, expand Computer Configuration, Administrative Templates, and then click System- > Credential Assignment Setting Name: Encrypt the Oracle fix, then right-click Edit, turn on, and level to be vulnerable. 2, for win 10 Home Edition, there is no Group Policy manager, at this time need to modify the registry, Hklm\software\microsoft\windows\currentversion\policies\system\credssp\ Parameters, the new DWORD type of Allowencryptionoracle, with a value of 2, restarts the system. cause of the problem:Remote Desktop is using the Credential Security Support Provider Protocol (CredSSP), which is a vulnerability in unpatched versions, May 8, 2018, Microsoft modified the policy in the patch, that is, a remote connection error occurred. Solution:Modify Remote Desktop properties to allow computers running any version of Remote Desktop to connect (less secure), after the application, the connection is successful, there is a long-awaited picture. Figure 2 is configured to only allow connections (more secure) to computers running remote desktops that use Network Level authentication. Modify path: "Computer"--right-click "Properties"-"Remote settings". Summary:This method solves the problem I encountered, but with certain risks, the production server is used with caution. Reference Document: https://www.landui.com/help/show-7787
Http://www.cftea.com/c/2018/05/8182.asp
https://support.microsoft.com/zh-cn/help/4093492/credssp-updates-for-cve-2018-0886-march-13-2018

[Windows Error] required function not supported, this may be due to CredSSP encryption Oracle fix