When you connect to another device using the Remote Desktop Protocol (RDP), you receive the error message, "An internal error has occurred."
- Datto RMM
The Microsoft security update (KB4103727) that addressed CVE-2018-0886 will prevent devices patched with this update from communicating with unpatched devices.
Either update the unpatched device, or create a Group Policy rule that reverts this change as shown in the Microsoft article for CredSSP updates for CVE-2018-0886 (external link).
You can verify that an unpatched device experienced this issue by looking at its event logs in Windows. Look for Event ID 6041.