: Excessive packet drops, strict MTU configurations, or poorly routed corporate VPN lines degrade the handshake packets enough to abort the session.
Sometimes the client fails to negotiate the gateway connection properly. You can force the client to bypass specific gateway checks (useful for testing installs):
Press Win + R , type certlm.msc , and hit Enter to open the Certificates snap-in. Navigate to . Locate the expired certificate, right-click, and Delete it. i remote desktop connection error code 0x904 install
If the certificate is expired, right-click and Delete it.
Input the following command to quarantine the broken key directory: powershell : Excessive packet drops, strict MTU configurations, or
Click "Allow another app," browse to C:\Windows\System32\mstsc.exe , and add it to the list. 3. Resolve Network or VPN Instability
This is a mandatory step on both the client and host computers. Navigate to
Windows will automatically generate a fresh, valid self-signed certificate into the store, allowing the TLS handshake to complete successfully. 2. Fix the "MachineKeys" Folder Corruption (Azure VMs)
While the initial pop-up implies a generic network drop-out, deep systemic issues within Windows and corporate network environments cause this specific code:
"The connection was denied because the user account is not authorized for remote login." (Generic message) OR "Your computer can't connect to the remote computer because an error occurred on the remote computer that you are trying to connect to."