Browser: Open Integrated Browser needs an allow list

Type: Feature Request

i am running a website that has windows auth on it, and the page renders 401 unauthorized. it works in chrome because of all the allow lists that are set. i need an allow list setting. i have a hacked version of vscode that i used to verify the issue and create a work around

VS Code version: Code 1.128.0 (fc3def6774c76082adf699d366f31a557ce5573f, 2026-07-07T15:14:24-07:00)
OS version: Windows_NT x64 10.0.26100
Modes:

System Info

|Item|Value|
|---|---|
|CPUs|12th Gen Intel(R) Core(TM) i9-12900H (20 x 2918)|
|GPU Status|2d_canvas: enabled
GPU0: VENDOR= 0x10de, DEVICE=0x25ba [NVIDIA RTX A2000 8GB Laptop GPU], DRIVER_VENDOR=NVIDIA, DRIVER_VERSION=32.0.15.6103 *ACTIVE*
GPU1: VENDOR= 0x8086, DEVICE=0x46a6 [Intel(R) Iris(R) Xe Graphics], DRIVER_VERSION=32.0.101.7077
GPU2: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.26100.8521
Machine model name:
Machine model version:
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_graphite: disabled_off
trees_in_viz: disabled_off
video_decode: enabled
video_encode: enabled
webgl: enabled
webgpu: enabled
webnn: disabled_off|
|Load (avg)|undefined|
|Memory (System)|31.68GB (5.77GB free)|
|Process Argv|--new-window --user-data-dir C:\\Users\\MMorrow\\AppData\\Local\\Temp\\vscode-ntlm-test --auth-server-whitelist=*.mydomain.com,psu.mydomain.com C:\\temp\\test vscode browser --crash-reporter-id 2e1090d9-fe71-4337-aa76-affdaa37d782|
|Screen Reader|no|
|VM|0%|
Extensions (55)

Name|Identifier|Author|Version
---|---|---|---
Angular Language Service|angular.ng-template|Angular|22.0.1
GitHub Markdown Preview|bierner.github-markdown-preview|bierner|0.4.0
Markdown Checkboxes|bierner.markdown-checkbox|bierner|0.4.0
Markdown Emoji|bierner.markdown-emoji|bierner|0.3.1
Markdown Footnotes|bierner.markdown-footnotes|bierner|0.1.1
Markdown Preview Mermaid Support|bierner.markdown-mermaid|bierner|1.32.1
Markdown Preview Github Styling|bierner.markdown-preview-github-styles|bierner|2.2.0
Markdown yaml Preamble|bierner.markdown-yaml-preamble|bierner|0.1.1
Prompt Boost|chrisdias.promptboost|chrisdias|0.8.0
ESLint|dbaeumer.vscode-eslint|dbaeumer|3.0.24
Docker DX|docker.docker|docker|0.18.0
Superpowers for Copilot Chat|dwaintr.superpowers-vscode|dwaintr|1.0.0
GitLens — Git supercharged|eamodio.gitlens|eamodio|18.2.0
EditorConfig|editorconfig.editorconfig|EditorConfig|0.18.2
Prettier - Code formatter|esbenp.prettier-vscode|esbenp|12.4.0
GitHub Actions|github.vscode-github-actions|github|0.32.1
GitHub Pull Requests|github.vscode-pull-request-github|GitHub|0.156.0
Go|golang.go|golang|0.54.0
Gemini Code Assist|google.geminicodeassist|google|2.87.0
PowerShell Universal|ironmansoftware.powershell-universal|ironmansoftware|2026.2.2
PowerShell Pro Tools|ironmansoftware.powershellprotools|ironmansoftware|2024.12.0
Angular Essentials (Version 20)|johnpapa.angular-essentials|johnpapa|20.0.1
Angular Snippets (Version 18)|johnpapa.angular2|johnpapa|18.0.2
Peacock|johnpapa.vscode-peacock|johnpapa|4.2.2
JSON to TS|mariusalchimavicius.json-to-ts|MariusAlchimavicius|1.8.0
Rainbow CSV|mechatroner.rainbow-csv|mechatroner|3.24.1
Container Tools|ms-azuretools.vscode-containers|ms-azuretools|2.4.5
Docker|ms-azuretools.vscode-docker|ms-azuretools|2.0.0
C# Dev Kit|ms-dotnettools.csdevkit|ms-dotnettools|3.20.199
C#|ms-dotnettools.csharp|ms-dotnettools|2.140.9
.NET Install Tool|ms-dotnettools.vscode-dotnet-runtime|ms-dotnettools|3.1.0
Data Workspace|ms-mssql.data-workspace-vscode|ms-mssql|0.6.3
SQL Server (mssql)|ms-mssql.mssql|ms-mssql|1.43.0
SQL Bindings|ms-mssql.sql-bindings-vscode|ms-mssql|0.4.1
SQL Database Projects|ms-mssql.sql-database-projects-vscode|ms-mssql|1.6.1
Playwright Test for VSCode|ms-playwright.playwright|ms-playwright|1.1.19
Python Debugger|ms-python.debugpy|ms-python|2026.6.0
Python|ms-python.python|ms-python|2026.4.0
Pylance|ms-python.vscode-pylance|ms-python|2026.2.1
Python Environments|ms-python.vscode-python-envs|ms-python|1.36.0
WSL|ms-vscode-remote.remote-wsl|ms-vscode-remote|0.104.3
Makefile Tools|ms-vscode.makefile-tools|ms-vscode|0.12.17
PowerShell|ms-vscode.powershell|ms-vscode|2025.4.0
Remote Explorer|ms-vscode.remote-explorer|ms-vscode|0.5.0
Remote - Tunnels|ms-vscode.remote-server|ms-vscode|1.5.3
Chat Customizations Evaluations|ms-vscode.vscode-chat-customizations-evaluations|ms-vscode|1.0.8
Live Share|ms-vsliveshare.vsliveshare|ms-vsliveshare|1.1.122
SQLTools|mtxr.sqltools|mtxr|0.28.6
Color Highlight|naumovs.color-highlight|naumovs|2.8.0
Material Icon Theme|pkief.material-icon-theme|PKief|5.36.1
YAML|redhat.vscode-yaml|redhat|1.24.0
Code Spell Checker|streetsidesoftware.code-spell-checker|streetsidesoftware|4.5.6
Context7 MCP Server|upstash.context7-mcp|Upstash|1.1.0
Error Lens|usernamehw.errorlens|usernamehw|3.28.0
Private Hello Extension|your-publisher.private-hello-extension|your-publisher|0.0.1

A/B Experiments

```
vsliv368cf:30146710
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
63221493:31336333
envsactivate1:31538736
cloudbuttont:31379625
3efgi100_wstrepl:31403338
ec5jj548:31422691
cp_cls_t_966_ss:31526232
4je02754:31466945
c3h7c220:31478652
ge8j1254_inline_auto_hint_haiku:31490510
38bie571_auto:31478677
cp_cls_t_1081:31454832
conptydll_true:31498968
ia-use-proxy-models-svc:31452481
e9c30283:31461165
test_control1:31471004
c9b86496:31447327
capi_b_098a3278:31544978
idci7584:31464702
e3e4d672:31494082
ei9d7968:31496641
nes-extended-on:31455476
chat:31457767
8hig5102:31480529
89g7j272:31518289
7e187181:31503455
i2gc6536:31499202
52612955:31516516
ghj88844:31499326
23c7c724:31520045
ddid_c:31478207
hmra_i5g22:31518061
ja75b849:31546597
7df3h592:31512476
cp_cls_t_1082:31535311
logging_enabled_new:31498466
j0d79568:31499440
jb_cp_cls_t_632:31543129
852d2892:31506239
56dj4588:31512888
32d76977:31512328
ha629193:31508444
cdk-lw-on:31524445
f9bf7985:31543584
31fi7170_t:31522396
jh5f2457_c:31540921
hgf2d445:31529595
8hfba999:31537718
prpt_lrg:31518466
jbcp_cls_pctr_t:31531130
61138546:31518536
cp_intellij_t_nes:31533504
gf14b233:31526830
nes-curr-leftover-1500:31538366
h561g132:31533256
sessions_5:31532894
ihg5j128:31534457
f412h606:31546039
7g2b5551:31542111
nes-nc-nf-2k:31546582

```