Packet loss, high latency, or brief drops in internet connectivity can cause the RDP session to time out during the initial handshake.
If you encounter error 0x904 on a cloud instance like an , the root cause is usually a corrupted MachineKeys directory. This corruption blocks the OS from writing new encryption keys or validating existing TLS configurations. Navigate to your virtual machine within the Azure Portal. Packet loss, high latency, or brief drops in
If the Maximum Transmission Unit (MTU) size on the network router is improperly configured, large RDP packets may be fragmented and dropped, resulting in a lost connection. Navigate to your virtual machine within the Azure Portal
: The host machine uses a hidden self-signed certificate to encrypt the RDP session. If this certificate expires, the client drops the handshake immediately. If this certificate expires, the client drops the
If a certificate renewal occurred but the Remote Desktop service cannot read the private key, the TLS tunnel will fail immediately. Inside certlm.msc , right-click your valid RDP certificate.