CredSSP Encryption Oracle Remediation RDP issue An update released by Microsoft ( KB 4093492 )on May 8, 2018 , for Windows 10 Operation System was targeted to change the default settings CredSSP from Vulnerable to Mitigated . However, post patching this caused an issue where the patched clients were blocked from communicating with unpatched servers over RDP protocols. This has been reported to cause an error thrown by Windows RDP as below: Solution: Use the group policy settings changes described below to rollback the changes to ‘Vulnerable’ state to allow RDP access. 1. Open Group Policy Editor, by executing gpedit.msc 2. Policy path: Computer Configuration -> Administrative Templates -> System -> Credentials Delegation Run gpedit.msc and expand Administrative Templates Expand System Expand Credential Delegation Edit Encryption Oracle Remediation Select Enabled and change Production Leve...