OpenAI ChatGPT extension fails in WSL after VS Code 1.126.0 update with PendingMigrationError: navigator is now a global in nodejs

What version of the IDE extension are you using?

26.623.70822

What subscription do you have?

Enterprise Gov

Which IDE are you using?

VS Code

What platform is your computer?

Windows 11

What issue are you seeing?

The ChatGPT extension stopped working suddenly after previously working for months in a WSL workspace.

The ChatGPT sidebar opens, but every conversation displays:

• Unable to load message
• Loading...

Changing models fails with:

• Couldn't update model settings

ChatGPT works normally in the browser using the same account.

What steps can reproduce the bug?

I open the Codex agent and enter any prompt.

The Remote Extension Host logs contain:

PendingMigrationError: navigator is now a global in nodejs
    at get (...extensionHostProcess.js...)
    at /home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:...

After that, the extension repeatedly logs:

Request failed
method=config/read
failed to read configuration layers:
timed out waiting for cloud config bundle after 15s

What I tried

• Signed out and back into the extension.
• Uninstalled and reinstalled the ChatGPT extension.
• Verified the extension installation (package.json exists).
• Removed extension state and logs.
• Rebuilt the WSL VS Code Server.
• Confirmed network connectivity from WSL (curl to OpenAI/ChatGPT succeeds).
• Confirmed ChatGPT works normally in the browser.
• Tried enabling:

``json
"extensions.supportNodeGlobalNavigator": true
``

with no change.

What is the expected behavior?

The ChatGPT sidebar should load conversations and allow model selection.

Additional information

The issue began suddenly without any intentional configuration changes. The timing suggests it may be related to a recent VS Code / WSL extension-host runtime update.

2026-06-30 07:43:04.672 [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:///home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/out/vs/workbench/api/node/extensionHostProcess.js:852:7288)
    at /home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:1:10389
    at get value (/home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:1:3497)
    at /home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:21:145
    at $ZodObjectJIT.n (/home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:1:904)
    at /home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:23:19492
    at n (/home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:1:904)
    at new ZodObject (/home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:1:1146)
    at Object.ee (/home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:23:9547)
    at /home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:23:28466
    at /home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:1:230
    at /home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:84:29437
    at /home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:1:230
    at Object.<anonymous> (/home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js:576:39242)
    at Module._compile (node:internal/modules/cjs/loader:1830:14)
    at Object..js (node:internal/modules/cjs/loader:1961:10)
    at Module.load (node:internal/modules/cjs/loader:1553:32)
    at Module.<anonymous> (node:internal/modules/cjs/loader:1355:12)
    at i._load (file:///home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/out/vs/workbench/api/node/extensionHostProcess.js:852:6667)
    at n._load (file:///home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/out/vs/workbench/api/node/extensionHostProcess.js:683:28855)
    at n._load (file:///home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/out/vs/workbench/api/node/extensionHostProcess.js:675:25845)
    at wrapModuleLoad (node:internal/modules/cjs/loader:255:19)
    at Module.require (node:internal/modules/cjs/loader:1576:12)
    at require (node:internal/modules/helpers:153:16)
    at _P._doLoadModule (file:///home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/out/vs/workbench/api/node/extensionHostProcess.js:686:1487)
    at process.processTicksAndRejections (node:internal/process/task_queues:104:5)
2026-06-30 07:43:05.730 [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:///home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/out/vs/workbench/api/node/extensionHostProcess.js:852:7288)
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:281:47508
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:1:327
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:281:51162
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:1:327
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:281:55194
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:1:327
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:281:56761
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:1:327
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:281:58951
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:1:327
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:290:2608
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:1:327
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:291:2671
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:1:327
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:291:9347
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:1:327
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:293:21450
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:1:327
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:293:25522
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:1:327
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:293:27025
    at /home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:1:327
    at Object.<anonymous> (/home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/extensions/copilot/dist/extension.js:2399:1178)
    at Module._compile (node:internal/modules/cjs/loader:1830:14)
    at Object..js (node:internal/modules/cjs/loader:1961:10)
    at Module.load (node:internal/modules/cjs/loader:1553:32)
    at Module.<anonymous> (node:internal/modules/cjs/loader:1355:12)
    at i._load (file:///home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/out/vs/workbench/api/node/extensionHostProcess.js:852:6667)
    at n._load (file:///home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/out/vs/workbench/api/node/extensionHostProcess.js:683:28855)
    at n._load (file:///home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/out/vs/workbench/api/node/extensionHostProcess.js:675:25845)
    at wrapModuleLoad (node:internal/modules/cjs/loader:255:19)
    at Module.<anonymous> (node:internal/modules/cjs/loader:1576:12)
    at require (node:internal/modules/helpers:153:16)
    at _P._doLoadModule (file:///home/philt/.vscode-server/bin/7e7950df89d055b5a378379db9ee14290772148a/out/vs/workbench/api/node/extensionHostProcess.js:686:1487)
    at process.processTicksAndRejections (node:internal/process/task_queues:104:5)

1. The startup failure:

PendingMigrationError: navigator is now a global in nodejs.../home/philt/.vscode-server/extensions/openai.chatgpt-26.623.70822-linux-x64/out/extension.js

1. The follow-on error:

Request failedmethod=config/readfailed to read configuration layers:timed out waiting for cloud config bundle after 15s

This is WSL Remote:

• Windows 11
• VS Code 1.126.0 (Stable)
• WSL Ubuntu
• Remote Extension Host
• ChatGPT extension 26.623.70822