Extension host crash on restart/reload

[aaronadamsCA]

• VSCode Version: 1.112.0
• Local OS Version: macOS 26.3.1
• Remote OS Version: Ubuntu
• Remote Extension/Connection Type: Dev Containers
• Logs: See below

Steps to Reproduce: Start container or reload window

Does this issue occur when you try this locally?: N/A
Does this issue occur when you try this locally and all extensions are disabled?: N/A

---

When you resume or reload a remote container with certain popular VS Code extensions that depend on Node.js, like bradlc.vscode-tailwindcss or graphql.vscode-graphql, the extension host is terminated, resolveAuthority throws the error Reconnect attempt without old result, and the container fails to load.

The problem is reproducible with or without Node.js installed. It does not reproduce on Codespaces.

Minimum reproduction without Node.js installed:

{
  "image": "mcr.microsoft.com/devcontainers/base:ubuntu-24.04@sha256:d94c97dd9cacf183d0a6fd12a8e87b526e9e928307674ae9c94139139c0c6eae",
  "customizations": {
    "vscode": {
      "extensions": ["bradlc.vscode-tailwindcss"]
    }
  }
}

1. Build container
2. Reload window once or twice

Result: Extension host is terminated, cannot connect to container.

Once the problem happens, the container must be rebuilt.

The problem is still reproducible with Node.js installed and available to all shells. I've configured a container so that sudo su vscode -c "node --version" returns the system Node.js version, and still the issue occurs on window reload.

I've kept my original message below, but at this point I don't think it adds much.

Original text

Sometimes a dev container enters a state where I can no longer connect to it. It can happen when I start the container or when I reload its window. Based on the logs, it looks like the extension host is terminated just after I connect.

Sometimes I see "Cannot reconnect. Please reload the window." Reload always fails with the same message.

Other times there is no error message, the status bar just shows "Disconnected from Dev Container."

I can reconnect with "Reload with Extensions Disabled", but I'm unable to narrow the cause to a single extension. The issue doesn't always reproduce during an extension bisect; if it does, the bisect tool can't make further changes to the list of enabled extensions, I assume because the extension host is gone.

In the logs, it looks like the extension host starts, then terminates, then starts again. Then resolveAuthority throws the error Reconnect attempt without old result..

I've yet to figure out what triggers the problem and what resolves it. The behaviour is very inconsistent.

I'd appreciate any help troubleshooting this, I'm not sure what to try next.

Extension host log on failed reload

2026-03-20 21:29:57.314 [info] Extension host terminating: renderer closed the MessagePort
2026-03-20 21:29:57.318 [info] Extension host with pid 8194 exiting with code 0
2026-03-20 21:29:57.864 [info] Extension host with pid 8275 started
2026-03-20 21:29:57.864 [info] Skipping acquiring lock for /Users/aaronadams/Library/Application Support/Code/User/workspaceStorage/2258215340f796c8bd15aa94794c94bf.
2026-03-20 21:29:57.864 [info] $getCanonicalURI invoked for authority (dev-container)
2026-03-20 21:29:57.892 [info] ExtensionService#_doActivateExtension ms-vscode-remote.remote-containers, startup: false, activationEvent: 'onResolveRemoteAuthority:dev-container'
2026-03-20 21:29:57.971 [error] PendingMigrationError: navigator is now a global in nodejs, please see https://aka.ms/vscode-extensions/navigator for additional info on this error.
    at get (file:///Applications/Visual%20Studio%20Code.app/Contents/Resources/app/out/vs/workbench/api/node/extensionHostProcess.js:810:7210)
    at vt (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:11229)
    at qn (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:7601)
    at /Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:11074
    at ou (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:7625)
    at /Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:20:3161
    at Object.l [as use] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:13883)
    at zae (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:14787)
    at Object.l [as watch] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:15016)
    at pr (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:15736)
    at q.<computed> [as initialize] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:20:2663)
    at e.u [as initialize] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:20556)
    at /Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:20:13725
    at dn (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:23793)
    at $.<computed> [as initialize] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:20:13120)
    at t.u [as initialize] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:20556)
    at Array.<anonymous> (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:27032)
    at ee (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:12439)
    at GN (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:26996)
    at Be (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:41335)
    at k.<computed> (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:37044)
    at Object.initialize (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:19857)
    at /Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:54646
    at dn (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:23793)
    at r.<computed> [as initialize] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:54574)
    at t.u [as initialize] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:20556)
    at ule (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:294:3630)
    at async aq (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:294:3857)
2026-03-20 21:29:57.976 [info] [resolveAuthority(dev-container,1)][0ms] activating remote resolvers dev-container+7b227265706f7369746f727950617468223a2268747470733a2f2f6769746875622e636f6d2f6e6973686572657461696c2f7765622d61707073222c22766f6c756d654e616d65223a227765622d617070732d37366435613362656233646364313138383334353638313664653663346466643665366533343235326565646535306638353362633563623561613666663533222c22666f6c646572223a227765622d61707073222c2273657474696e6773223a7b22636f6e74657874223a226465736b746f702d6c696e7578227d2c22636c6f6e65496e666f223a7b2275726c546f436c6f6e65223a2268747470733a2f2f6769746875622e636f6d2f6e6973686572657461696c2f7765622d61707073227d2c22696e7370656374566f6c756d65223a66616c73657d
2026-03-20 21:29:57.976 [info] [resolveAuthority(dev-container,1)][0ms] activating resolver for dev-container+7b227265706f7369746f727950617468223a2268747470733a2f2f6769746875622e636f6d2f6e6973686572657461696c2f7765622d61707073222c22766f6c756d654e616d65223a227765622d617070732d37366435613362656233646364313138383334353638313664653663346466643665366533343235326565646535306638353362633563623561613666663533222c22666f6c646572223a227765622d61707073222c2273657474696e6773223a7b22636f6e74657874223a226465736b746f702d6c696e7578227d2c22636c6f6e65496e666f223a7b2275726c546f436c6f6e65223a2268747470733a2f2f6769746875622e636f6d2f6e6973686572657461696c2f7765622d61707073227d2c22696e7370656374566f6c756d65223a66616c73657d...
2026-03-20 21:29:57.976 [info] [resolveAuthority(dev-container,1)][0ms] invoking final resolve()...
2026-03-20 21:29:58.977 [info] [resolveAuthority(dev-container,1)][1001ms] waiting...
2026-03-20 21:29:59.979 [info] [resolveAuthority(dev-container,1)][2003ms] waiting...
2026-03-20 21:30:00.978 [info] [resolveAuthority(dev-container,1)][3002ms] waiting...
2026-03-20 21:30:01.559 [info] [resolveAuthority(dev-container,1)][3583ms] setting tunnel factory...
2026-03-20 21:30:01.560 [info] [resolveAuthority(dev-container,1)][3584ms] returned 127.0.0.1:36949
2026-03-20 21:30:02.055 [info] Eager extensions activated
2026-03-20 21:30:02.134 [info] ExtensionService#_doActivateExtension vscode.github-authentication, startup: false, activationEvent: 'onAuthenticationRequest:github'
2026-03-20 21:30:02.144 [info] ExtensionService#_doActivateExtension vscode.microsoft-authentication, startup: false, activationEvent: 'onAuthenticationRequest:microsoft'
2026-03-20 21:30:02.326 [info] Extension host terminating: renderer closed the MessagePort
2026-03-20 21:30:02.332 [info] Extension host with pid 8275 exiting with code 0
2026-03-20 21:30:02.606 [info] Extension host with pid 8423 started
2026-03-20 21:30:02.606 [info] Skipping acquiring lock for /Users/aaronadams/Library/Application Support/Code/User/workspaceStorage/2258215340f796c8bd15aa94794c94bf.
2026-03-20 21:30:02.606 [info] [resolveAuthority(dev-container,2)][0ms] activating remote resolvers dev-container+7b227265706f7369746f727950617468223a2268747470733a2f2f6769746875622e636f6d2f6e6973686572657461696c2f7765622d61707073222c22766f6c756d654e616d65223a227765622d617070732d37366435613362656233646364313138383334353638313664653663346466643665366533343235326565646535306638353362633563623561613666663533222c22666f6c646572223a227765622d61707073222c2273657474696e6773223a7b22636f6e74657874223a226465736b746f702d6c696e7578227d2c22636c6f6e65496e666f223a7b2275726c546f436c6f6e65223a2268747470733a2f2f6769746875622e636f6d2f6e6973686572657461696c2f7765622d61707073227d2c22696e7370656374566f6c756d65223a66616c73657d
2026-03-20 21:30:02.606 [info] [resolveAuthority(dev-container,2)][0ms] activating resolver for dev-container+7b227265706f7369746f727950617468223a2268747470733a2f2f6769746875622e636f6d2f6e6973686572657461696c2f7765622d61707073222c22766f6c756d654e616d65223a227765622d617070732d37366435613362656233646364313138383334353638313664653663346466643665366533343235326565646535306638353362633563623561613666663533222c22666f6c646572223a227765622d61707073222c2273657474696e6773223a7b22636f6e74657874223a226465736b746f702d6c696e7578227d2c22636c6f6e65496e666f223a7b2275726c546f436c6f6e65223a2268747470733a2f2f6769746875622e636f6d2f6e6973686572657461696c2f7765622d61707073227d2c22696e7370656374566f6c756d65223a66616c73657d...
2026-03-20 21:30:02.610 [info] ExtensionService#_doActivateExtension ms-vscode-remote.remote-containers, startup: false, activationEvent: 'onResolveRemoteAuthority:dev-container'
2026-03-20 21:30:02.675 [info] ExtensionService#_doActivateExtension vscode.github-authentication, startup: false, activationEvent: 'onAuthenticationRequest:github'
2026-03-20 21:30:02.682 [info] ExtensionService#_doActivateExtension vscode.microsoft-authentication, startup: false, activationEvent: 'onAuthenticationRequest:microsoft'
2026-03-20 21:30:02.740 [info] [resolveAuthority(dev-container,2)][136ms] invoking final resolve()...
2026-03-20 21:30:02.741 [error] [resolveAuthority(dev-container,2)][136ms] returned an error Reconnect attempt without old result.
2026-03-20 21:30:03.045 [info] Eager extensions activated

Extension host log on successful reload with extensions disabled

2026-03-21 09:45:22.390 [info] Extension host terminating: renderer closed the MessagePort
2026-03-21 09:45:22.396 [info] Extension host with pid 77098 exiting with code 0
2026-03-21 09:45:22.920 [info] Extension host with pid 78223 started
2026-03-21 09:45:22.920 [info] Skipping acquiring lock for /Users/aaronadams/Library/Application Support/Code/User/workspaceStorage/b7c7afa7272bbb8330331e7c8a45d409.
2026-03-21 09:45:22.920 [info] $getCanonicalURI invoked for authority (dev-container)
2026-03-21 09:45:22.923 [info] ExtensionService#_doActivateExtension ms-vscode-remote.remote-containers, startup: false, activationEvent: 'onResolveRemoteAuthority:dev-container'
2026-03-21 09:45:22.999 [error] PendingMigrationError: navigator is now a global in nodejs, please see https://aka.ms/vscode-extensions/navigator for additional info on this error.
    at get (file:///Applications/Visual%20Studio%20Code.app/Contents/Resources/app/out/vs/workbench/api/node/extensionHostProcess.js:810:7210)
    at vt (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:11229)
    at qn (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:7601)
    at /Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:11074
    at ou (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:7625)
    at /Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:20:3161
    at Object.l [as use] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:13883)
    at zae (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:14787)
    at Object.l [as watch] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:15016)
    at pr (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:15736)
    at q.<computed> [as initialize] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:20:2663)
    at e.u [as initialize] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:20556)
    at /Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:20:13725
    at dn (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:23793)
    at $.<computed> [as initialize] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:20:13120)
    at t.u [as initialize] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:20556)
    at Array.<anonymous> (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:27032)
    at ee (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:12439)
    at GN (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:26996)
    at Be (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:41335)
    at k.<computed> (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:37044)
    at Object.initialize (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:19857)
    at /Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:54646
    at dn (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:23793)
    at r.<computed> [as initialize] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:18:54574)
    at t.u [as initialize] (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:17:20556)
    at ule (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:294:3630)
    at async aq (/Users/aaronadams/.vscode/extensions/ms-vscode-remote.remote-containers-0.447.0/dist/extension/extension.js:294:3857)
2026-03-21 09:45:23.004 [info] [resolveAuthority(dev-container,1)][0ms] activating remote resolvers dev-container+7b227265706f7369746f727950617468223a2268747470733a2f2f6769746875622e636f6d2f6e6973686572657461696c2f7765622d61707073222c22766f6c756d654e616d65223a227765622d617070732d37366435613362656233646364313138383334353638313664653663346466643665366533343235326565646535306638353362633563623561613666663533222c22666f6c646572223a227765622d61707073222c2273657474696e6773223a7b22636f6e74657874223a226465736b746f702d6c696e7578227d2c22696e7370656374566f6c756d65223a66616c73657d
2026-03-21 09:45:23.004 [info] [resolveAuthority(dev-container,1)][0ms] activating resolver for dev-container+7b227265706f7369746f727950617468223a2268747470733a2f2f6769746875622e636f6d2f6e6973686572657461696c2f7765622d61707073222c22766f6c756d654e616d65223a227765622d617070732d37366435613362656233646364313138383334353638313664653663346466643665366533343235326565646535306638353362633563623561613666663533222c22666f6c646572223a227765622d61707073222c2273657474696e6773223a7b22636f6e74657874223a226465736b746f702d6c696e7578227d2c22696e7370656374566f6c756d65223a66616c73657d...
2026-03-21 09:45:23.004 [info] [resolveAuthority(dev-container,1)][0ms] invoking final resolve()...
2026-03-21 09:45:24.007 [info] [resolveAuthority(dev-container,1)][1003ms] waiting...
2026-03-21 09:45:25.008 [info] [resolveAuthority(dev-container,1)][2004ms] waiting...
2026-03-21 09:45:26.007 [info] [resolveAuthority(dev-container,1)][3003ms] waiting...
2026-03-21 09:45:26.101 [info] [resolveAuthority(dev-container,1)][3097ms] setting tunnel factory...
2026-03-21 09:45:26.101 [info] [resolveAuthority(dev-container,1)][3097ms] returned 127.0.0.1:36239
2026-03-21 09:45:26.303 [info] Eager extensions activated
2026-03-21 09:45:26.340 [info] ExtensionService#_doActivateExtension vscode.github-authentication, startup: false, activationEvent: 'onAuthenticationRequest:github'
2026-03-21 09:45:26.353 [info] ExtensionService#_doActivateExtension vscode.microsoft-authentication, startup: false, activationEvent: 'onAuthenticationRequest:microsoft'
2026-03-21 09:45:32.173 [error] Shell server terminated (code: 1, signal: null)

Error response from daemon: No such container: 4a13235c795ad638f35f1a4744bf4657f78df9c4adf6697681762378b6419730

Process list with extensions disabled

UID        PID  PPID  C STIME TTY          TIME CMD
root         1     0  0 07:50 ?        00:00:00 /bin/sh -c echo Container started trap "exit 0" 15  exec "$@" while sleep 1 & wait $!; do :; done -
root        21     0  0 07:50 ?        00:00:00 /bin/sh -c echo "New container started. Keep-alive process started." ; export VSCODE_REMOTE_CONTAINERS_SESSION=ee42efd1-71aa-41b9-af35-4e16a48f08f217740
vscode      27     0  0 07:50 ?        00:00:00 /bin/sh
root        33    21  0 07:50 ?        00:00:00 /bin/sh
root       106     0  0 07:50 ?        00:00:00 /bin/sh
vscode     112     0  0 07:50 ?        00:00:00 /bin/sh
vscode     148   112  0 07:50 ?        00:00:00 /home/vscode/.vscode-server/bin/07ff9d6178ede9a1bd12ad3399074d726ebe6e43/node /tmp/vscode-remote-containers-server-1a7e1169-a953-4672-9e27-78c1bb82fe0c.
vscode     210     0  0 07:50 ?        00:00:00 sh /home/vscode/.vscode-server/bin/07ff9d6178ede9a1bd12ad3399074d726ebe6e43/bin/code-server --log debug --force-disable-user-env --server-data-dir /home
vscode     224   210  2 07:50 ?        00:00:02 /vscode/vscode-server/bin/linux-arm64/07ff9d6178ede9a1bd12ad3399074d726ebe6e43/node /vscode/vscode-server/bin/linux-arm64/07ff9d6178ede9a1bd12ad3399074d
vscode     292     0  0 07:50 ?        00:00:00 /home/vscode/.vscode-server/bin/07ff9d6178ede9a1bd12ad3399074d726ebe6e43/node -e  ????const net = require('net'); ????const fs = require('fs'); ????proc
vscode     319     0  0 07:50 ?        00:00:00 /home/vscode/.vscode-server/bin/07ff9d6178ede9a1bd12ad3399074d726ebe6e43/node -e  ????const net = require('net'); ????const fs = require('fs'); ????proc
vscode     331   224  3 07:50 ?        00:00:03 /vscode/vscode-server/bin/linux-arm64/07ff9d6178ede9a1bd12ad3399074d726ebe6e43/node /vscode/vscode-server/bin/linux-arm64/07ff9d6178ede9a1bd12ad3399074d
vscode     373   224  2 07:50 ?        00:00:02 /vscode/vscode-server/bin/linux-arm64/07ff9d6178ede9a1bd12ad3399074d726ebe6e43/node --dns-result-order=ipv4first /vscode/vscode-server/bin/linux-arm64/0
vscode     401   373  0 07:50 ?        00:00:00 /vscode/vscode-server/bin/linux-arm64/07ff9d6178ede9a1bd12ad3399074d726ebe6e43/node /vscode/vscode-server/bin/linux-arm64/07ff9d6178ede9a1bd12ad3399074d
vscode     446   224  0 07:50 ?        00:00:00 /vscode/vscode-server/bin/linux-arm64/07ff9d6178ede9a1bd12ad3399074d726ebe6e43/node /vscode/vscode-server/bin/linux-arm64/07ff9d6178ede9a1bd12ad3399074d
vscode     465   446  0 07:50 pts/0    00:00:00 /usr/bin/zsh -i
root      1044     1  0 07:51 ?        00:00:00 sleep 1
vscode    1052   465  0 07:51 pts/0    00:00:00 ps -ef

Dev container config

{
  "name": "web-apps",
  "image": "mcr.microsoft.com/devcontainers/base:ubuntu-24.04@sha256:d94c97dd9cacf183d0a6fd12a8e87b526e9e928307674ae9c94139139c0c6eae",
  "runArgs": ["--sysctl", "net.ipv6.conf.all.disable_ipv6=1"],
  "customizations": {
    "vscode": {
      "extensions": [
        "anthropic.claude-code",
        "bierner.github-markdown-preview",
        "bradlc.vscode-tailwindcss",
        "dbaeumer.vscode-eslint",
        "github.vscode-github-actions",
        "graphql.vscode-graphql",
        "irongeek.vscode-env",
        "ms-fast.fast-tagged-templates",
        "oxc.oxc-vscode",
        "redhat.vscode-yaml",
        "tamasfe.even-better-toml",
        "timonwong.shellcheck",
        "unifiedjs.vscode-mdx"
      ]
    }
  },
  "containerEnv": {
    "VOLTA_FEATURE_PNPM": "1"
  },
  "features": {
    "ghcr.io/jakejarvis/devcontainer-features/volta:1.0.0": {}
  },
  "updateContentCommand": "volta install node pnpm"
}

[aaronadamsCA]

After a painfully slow manual bisect process, I think I've narrowed this down to TWO fairly popular marketplace extensions:

bradlc.vscode-tailwindcss
graphql.vscode-graphql

With either extension installed in a freshly rebuilt dev container, and all other extensions disabled, I can generally break the extension host just by reloading the window once or twice.

The error logged by the extension host whenever this happens:

2026-03-22 23:47:38.786 [info] [resolveAuthority(dev-container,2)][134ms] invoking final resolve()...
2026-03-22 23:47:38.787 [error] [resolveAuthority(dev-container,2)][135ms] returned an error Reconnect attempt without old result.

With both of the above extensions disabled, the extension host seems to run normally.

Given both extensions have millions of downloads, I have to imagine they both work correctly, and just share some common characteristic that can unexpectedly terminate the extension host.

[aaronadamsCA]

I narrowed this down further. The trigger in our case is an extension trying to use Node.js when it's not installed.

This minimal devcontainer.json can reproduce the issue:

{
  "image": "mcr.microsoft.com/devcontainers/base:ubuntu-24.04@sha256:d94c97dd9cacf183d0a6fd12a8e87b526e9e928307674ae9c94139139c0c6eae",
  "customizations": {
    "vscode": {
      "extensions": ["bradlc.vscode-tailwindcss"]
    }
  }
}

Just build this container and then reload the window once or twice. The extension host will be repeatedly terminated.

To work around the issue, I can fix our dev container's $PATH so that extensions can find Node.js.

The bigger question is why this mistake causes the extension host to be terminated and resolveAuthority to throw Reconnect attempt without old result.