Fixing an RDP error: This computer can't connect to the remote computer

Several factors can contribute to the Remote Desktop Connection error code 0x904 extended error code 0x7 full. Some of the most common causes include:

Corporate firewalls (like Zscaler, Blue Coat, or FortiGate) performing SSL inspection can modify the RDP-over-HTTPS traffic. They replace the RD Gateway’s certificate with their own, breaking the RDP protocol’s strict expectations.

If you see this error while using AVD, it is almost always a or Network Security Group (NSG) issue. Ensure the RD Gateway is reachable.

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