This is the most effective solution for this specific error code. It clears the cache and resets the services to their default state.

In technical terms, this code maps to a specific facility and code within the Windows architecture. The 0x3 prefix indicates the facility is related to the Windows Update Agent, and the 0x8 suffix typically signifies a generic handling failure or an issue with the state of the update package.

Many configurations only open Port 443 for TCP. Enabling UDP for this port has been confirmed to resolve 0x3000008 on many Windows 11 systems.

Open ( services.msc ) and restart Remote Desktop Services .

Follow these steps in order to resolve the issue. You will need Administrator privileges to perform these fixes.

This is one of the most effective fixes for Windows 11 users experiencing this error when connecting via an RDS Gateway.

Restart after completion.

The 0x0 extended code means the system doesn’t have a specific sub-error to report. That usually makes corrupted app cache or Gaming Services failure the most likely cause—so focus on Steps 1 through 3 first.