Bug Description

Since August 29th, I started experiencing issues with RustDesk. When I open the application, it shows an orange status indicator with the message: "Not ready. Please check your connection", instead of the usual green message: "Ready to connect".

My internet connection works fine for everything else (browsing, other applications, etc.), but I can't connect to other devices using RustDesk. When I try to connect, the following error appears:

"Connection error: Failed to connect to rs-ny.rustdesk.com:21116: Please try again later"

I checked the connection to that address (rs-ny.rustdesk.com) using a port test with the following command:

Test-NetConnection rs-ny.rustdesk.com -Port 21116

There is no response from this network. However, if I switch to a different network (e.g., mobile data or Wi-Fi from another provider), RustDesk works perfectly.

This behavior led me to believe that the issue is related to certain networks or internet providers that are blocking or filtering the connection to the server rs-ny.rustdesk.com:21116.

I’ve tested this from multiple networks and confirmed that some allow the connection while others do not. It’s not a device or local configuration issue, but clearly a difference based on the network or ISP.

How to Reproduce

Open RustDesk from a network where the issue occurs.

Notice the message: "Not ready. Please check your connection".

Try to connect to any remote device.

The error appears: "Failed to connect to rs-ny.rustdesk.com:21116".

Switch to a different network (e.g., mobile data or a different ISP's Wi-Fi).

RustDesk works normally and allows connections.

You can also reproduce this by running a port test to rs-ny.rustdesk.com on port 21116 using:

Test-NetConnection rs-ny.rustdesk.com -Port 21116

Expected Behavior

RustDesk should automatically connect to the server as usual and display the "Ready to connect" status, allowing control of other devices regardless of the network or internet provider.

Operating system(s) on local (controlling) side and remote (controlled) side

Windows 10 → Windows 10, Windows 11, Windows 7

RustDesk Version(s) on local (controlling) side and remote (controlled) side

1.4.1 → 1.4.1 or 1.4.1 → 1.3.7

Screenshots

Additional Context

This issue only happens on certain networks. I’ve checked with family and friends who also use RustDesk, and some of them face the same problem depending on their internet provider.

This suggests that the server rs-ny.rustdesk.com:21116 might be blocked or unreachable from certain networks or ISPs, which directly affects RustDesk's ability to function properly.

I suggest reviewing the availability of the server from different networks or considering alternative routing options if it turns out to be a blocking or routing issue.