I ran into below problem – where a single user could not connect to remote desktop through rdgateway I found this article; https://support.microsoft.com/en-us/help/2903333/terminal-services-client-connection-error-0xc000035b-when-you-use-lmco The solution here was method 1 in above article HKLM\SYSTEM\CurrentControlSet\Control\Lsa LmCompatibilityLevel REGDWORD 3 or above. Method 2 is on the server; Set the EnforceChannelBinding registry value to 0 (zero) to ignore missing …