Teleport RDP sessions dropped on resize, fixed in 18.11

TL;DR

Upgrade to Teleport 18.11 or newer if RDP sessions die when the client window resizes; the fix is in PR 67720. Collaborator zmb3 confirmed the fix in PR 67720, landing in Teleport 18.11.

Steps

1. Upgrade to Teleport 18.11 or newer if RDP sessions die when the client window resizes; the fix is in PR 67720. It is notoriously hard to reproduce consistently, so do not burn time on client or network debugging first; check your Teleport version against the fixed release.

When to use

You are seeing this: A contributor confirmed the error reproduced internally and linked it to an upstream IronRDP issue. Use this skill when you run into "Teleport RDP sessions dropped on resize, fixed in 18.11".

When not to use

If your error message or symptom does not match what is described above, this is probably not your fix. Search for your exact error text instead of forcing this one to fit.

Versions

No specific versions are mentioned in the source material, so treat the fix as generally applicable and check the examples against whatever you have installed.

Why this happens

The original report does not dig into a root cause. It documents the symptom and the fix that resolved it.

Source: Issue gravitational/teleport#42487 (closed): RDP sessions were terminated on window resize events with a server-side graphics subsystem error, seen against Windows Server 2019. A contributor confirmed the error reproduced internally and linked it to an upstream IronRDP issue. Collaborator zmb3 confirmed the fix in PR 67720, landing in Teleport 18.11.

Verified resolution: Upgrade to Teleport 18.11 or newer if RDP sessions die when the client window resizes; the fix is in PR 67720. It is notoriously hard to reproduce consistently, so do not burn time on client or network debugging first; check your Teleport version against the fixed release.

Source URL: https://github.com/gravitational/teleport/issues/42487