[Browser] System.InvalidOperationException: A command response was not received: Target.setAutoAttach

[jkotas]

[17:11:42] info: Closing 1 browser tabs before setting the main tab to config page and quitting.
[17:11:54] crit: OpenQA.Selenium.WebDriverException: Unexpected error creating WebSocket DevTools session.
                  ---> System.InvalidOperationException: A command response was not received: Target.setAutoAttach
                    at OpenQA.Selenium.DevTools.DevToolsSession.SendCommand(String commandName, JToken params, CancellationToken cancellationToken, Nullable`1 millisecondsTimeout, Boolean throwExceptionIfResponseNotReceived)
                    at OpenQA.Selenium.DevTools.DevToolsSession.SendCommand[TCommand,TCommandResponse](TCommand command, CancellationToken cancellationToken, Nullable`1 millisecondsTimeout, Boolean throwExceptionIfResponseNotReceived)
                    at OpenQA.Selenium.DevTools.Target.TargetAdapter.SetAutoAttach(SetAutoAttachCommandSettings command, CancellationToken cancellationToken, Nullable`1 millisecondsTimeout, Boolean throwExceptionIfResponseNotReceived)
                    at OpenQA.Selenium.Chromium.ChromiumDriver.CreateDevToolsSession()
                    --- End of inner exception stack trace ---
                    at OpenQA.Selenium.Chromium.ChromiumDriver.CreateDevToolsSession()
                    at Microsoft.DotNet.XHarness.CLI.Commands.Wasm.WasmBrowserTestRunner.RunTestsWithWebDriver(DriverService driverService, IWebDriver driver) in /_/src/Microsoft.DotNet.XHarness.CLI/Commands/WASM/Browser/WasmBrowserTestRunner.cs:line 75
                    at Microsoft.DotNet.XHarness.CLI.Commands.Wasm.WasmTestBrowserCommand.InvokeInternal(ILogger logger) in /_/src/Microsoft.DotNet.XHarness.CLI/Commands/WASM/Browser/WasmTestBrowserCommand.cs:line 86
                    at Microsoft.DotNet.XHarness.CLI.Commands.Wasm.WasmTestBrowserCommand.InvokeInternal(ILogger logger) in /_/src/Microsoft.DotNet.XHarness.CLI/Commands/WASM/Browser/WasmTestBrowserCommand.cs:line 152
                    at Microsoft.DotNet.XHarness.CLI.Commands.XHarnessCommand`1.Invoke(IEnumerable`1 arguments) in /_/src/Microsoft.DotNet.XHarness.CLI/Commands/XHarnessCommand.cs:line 145
XHarness exit code: 71 (GENERAL_FAILURE)

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1488119
Build error leg or test failing: WasmTestOnChrome-CLR-ST-Batch-2.WorkItemExecution
Pull request: #130015

Error Message

DO NOT USE JSON BELOW IF THIS IS A BUILD BREAK otherwise build analysis will allow pull requests to merge that break the build worse. For a build break, do not use this issue form. Make a regular new issue.

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "System.InvalidOperationException: A command response was not received: Target.setAutoAttach",
  "ErrorPattern": "",
  "BuildRetry": true,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1488119
Error message validated: [System.InvalidOperationException: A command response was not received: Target.setAutoAttach]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 6/30/2026 8:00:12 PM UTC

Report

Build	Repository	Test	Pull Request
1488119	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-2.WorkItemExecution	#130015

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	1	1

Report

Build	Repository	Test	Pull Request
1488119	dotnet/runtime	WasmTestOnChrome-CLR-ST-Batch-2.WorkItemExecution	#130015

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	1	1

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/area-infrastructure-libraries
See info in area-owners.md if you want to be subscribed.

[dotnet-policy-service]

Tagging subscribers to 'arch-wasm': @lewing, @pavelsavara
See info in area-owners.md if you want to be subscribed.

[pavelsavara]

This is chrome/infra. I changed it to "BuildRetry": true,