Open Command Prompt as administrator and run: net stop termservice then net start termservice .
Right-click the folder and select , changing it to MachineKeys.old .
Software conflicts, particularly from background applications, security tools, or system utilities, can interfere with RDP and cause error 0x904. Performing a clean boot on both the client and the server can help identify the culprit. i remote desktop connection error code 0x904 install
Check the expiration date. If expired, right-click and Delete the old certificate.
0x900 (ERROR_INVALID_PARAMETER) + 0x4
Error 0x904 is often accompanied by an extended error code (such as 0x7 or 0x0) and a message stating, "This computer can't connect to the remote computer." The most common causes include:
Get-WindowsFeature -Name RDS-RD-Server
Download the RDP 8.1 update (KB2923545 for Win7/8) or RDP 10.0 CAB from Microsoft Update Catalog, then:
Go to .
The most common culprit is an expired self-signed certificate on the remote server. These don't always renew automatically, causing the connection to fail.
This article provides a comprehensive guide to understanding and fixing the error, including installation fixes and network-related troubleshooting. What Causes the 0x904 RDP Error? Open Command Prompt as administrator and run: net