How to Fix error code 5 Error – query session command gives error code 5 even when AllowRemoteRPC is set to 1

The 'Query Session' command is returning an error code 5, despite having AllowRemoteRPC set to 1, affecting Windows 10 Remote Desktop users. This issue can be frustrating for administrators trying to troubleshoot and manage remote sessions.

AllowRemoteRPC is a setting that enables remote access to the Terminal Server session. However, its value being set to 1 does not guarantee successful connection attempts. The error code 5 indicates an 'Access is denied' issue, which may be due to various reasons such as incorrect configuration or permissions.

⚠️ Common Causes

• The primary reason for this error is that the AllowRemoteRPC setting only affects the Terminal Server session, but not all remote desktop connections. To resolve this issue, it's essential to understand that AllowRemoteRPC does not enable remote access to individual user sessions. Instead, it controls the Terminal Server session level. Therefore, if you're trying to connect to a specific user session, you may need to use alternative methods.
• Another possible reason is that the remote desktop connection is being established using a different protocol or authentication method that bypasses the AllowRemoteRPC setting. In this case, you may need to investigate and adjust your remote desktop configuration to ensure compatibility with the Query Session command.

🛠️ Step-by-Step Verified Fixes

🎯 Final Words

In summary, resolving the 'Query Session' command error code 5 requires understanding the limitations of the AllowRemoteRPC setting and using alternative methods to connect to individual user sessions. By following the steps outlined above, you should be able to troubleshoot and resolve this issue, ensuring successful remote desktop connections.