The automatic Windows patch to raise the security level is not implemented if the PC doesn’t allow automatic updates. If your PC received the May update but the target PC hasn’t implemented the CredSSP update, the PC receives the error message when it tries to connect to that PC. It changed the default setting from Vulnerable to Mitigated which means that any PC using CredSSP is not be able to use insecure versions. Security update deployment information: May 08, 2018 The Microsoft Security patch issued on Tuesday, May 8th triggered the problem by setting and requiring remote connections at the highest level (CredSSP Updates for CVE-2018-0886):: It recommends some steps but isn’t very clear what those changes are nor whether those changes are needed to be made by network administrators globally via group policies, or group policies on every PC and VM. It offers extensive information on a series of updates since March 2018. The link goes to this page,, and explains the Credential Security Support Provider protocol (CredSSP). This could be due to CredSSP encryption oracle remediation.įor more information, see https:/go./fwlink/?linkid=866660 Remote Desktop Connection Error An authentication error has occurred. Users received error messages like this when they tried to remote to machines they connected to successfully for a long time: Starting May 9, we received many reports of Remote Desktop connections failing globally.
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