Remote Tunnel Access is broken

Type: Bug

It fials to start:
```
2026-08-20 18:17:01.260 [info] Running tunnel CLI

2026-08-20 18:17:01.260 [info] status Spawning: c:\Users\********\AppData\Local\Programs\Microsoft VS Code\bin\code-tunnel.exe tunnel status

2026-08-20 18:17:01.303 [info] {"tunnel":null,"service_installed":false}

2026-08-20 18:17:01.307 [info] status exit(36072): + 0
2026-08-20 18:17:01.323 [info] Running tunnel CLI

2026-08-20 18:17:01.323 [info] login Spawning: c:\Users\********\AppData\Local\Programs\Microsoft VS Code\bin\code-tunnel.exe tunnel user login --provider github --log info

2026-08-20 18:17:01.394 [info] login exit(23928): + 0
2026-08-20 18:17:01.394 [info] Running tunnel CLI

2026-08-20 18:17:01.395 [info] tunnel Spawning: c:\Users\********\AppData\Local\Programs\Microsoft VS Code\bin\code-tunnel.exe tunnel --accept-server-license-terms --log info --user-data-dir C:\Users\********\AppData\Roaming\Code --delegate-to-editor --name ******** --parent-process-id 23264

2026-08-20 18:17:01.436 [error] error: unexpected argument '--user-data-dir' found

2026-08-20 18:17:01.436 [error]

2026-08-20 18:17:01.437 [error] tip: a similar argument exists: '--server-data-dir'

2026-08-20 18:17:01.437 [error]

2026-08-20 18:17:01.438 [error] Usage: code-tunnel.exe tunnel --accept-server-license-terms --log --server-data-dir

2026-08-20 18:17:01.439 [error]

2026-08-20 18:17:01.439 [error] For more information, try '--help'.

2026-08-20 18:17:01.440 [info] tunnel exit(29536): + 2
```

VS Code version: Code 1.134.0 (110a328ea54b42367b803ec53ee0bf52ef26b419, 2026-08-18T18:24:44Z)
OS version: Windows_NT x64 10.0.26200
Modes:

System Info

|Item|Value|
|---|---|
|CPUs|Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz (8 x 3600)|
|GPU Status|2d_canvas: enabled
GPU0: VENDOR= 0x10de, DEVICE=0x2503 [NVIDIA GeForce RTX 3060], DRIVER_VENDOR=NVIDIA, DRIVER_VERSION=32.0.15.8097 *ACTIVE*
GPU1: VENDOR= 0x10de, DEVICE=0x2503 [NVIDIA GeForce RTX 3060], DRIVER_VERSION=32.0.15.8097
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)|63.94GB (37.27GB free)|
|Process Argv|--crash-reporter-id 358dba80-56fc-470c-833a-f2ad595e317d|
|Screen Reader|no|
|VM|0%|
Extensions (38)

Name|Identifier|Author|Version
---|---|---|---
SQLite|alexcvzz.vscode-sqlite|alexcvzz|0.14.1
USD Language|animallogic.vscode-usda-syntax|animallogic|0.2.0
Docker DX|docker.docker|docker|0.18.0
GitHub Repositories|github.remotehub|GitHub|0.64.0
GitHub Actions|github.vscode-github-actions|github|0.32.3
Google Cloud Data Agent Kit|googlecloudtools.datacloud|googlecloudtools|0.9.1
Todo Tree|gruntfuggly.todo-tree|Gruntfuggly|0.0.226
Rainbow CSV|mechatroner.rainbow-csv|mechatroner|3.24.1
Container Tools|ms-azuretools.vscode-containers|ms-azuretools|2.4.5
Black Formatter|ms-python.black-formatter|ms-python|2026.6.0
Python Debugger|ms-python.debugpy|ms-python|2026.6.0
isort|ms-python.isort|ms-python|2026.6.0
Python|ms-python.python|ms-python|2026.4.0
Pylance|ms-python.vscode-pylance|ms-python|2026.3.1
Python Environments|ms-python.vscode-python-envs|ms-python|1.36.0
Data Wrangler|ms-toolsai.datawrangler|ms-toolsai|1.24.2
Jupyter|ms-toolsai.jupyter|ms-toolsai|2025.9.1
Jupyter Keymap|ms-toolsai.jupyter-keymap|ms-toolsai|1.1.2
Jupyter Notebook Renderers|ms-toolsai.jupyter-renderers|ms-toolsai|1.3.0
Jupyter Cell Tags|ms-toolsai.vscode-jupyter-cell-tags|ms-toolsai|0.1.9
Jupyter Slide Show|ms-toolsai.vscode-jupyter-slideshow|ms-toolsai|0.1.6
Dev Containers|ms-vscode-remote.remote-containers|ms-vscode-remote|0.466.0
Remote - SSH|ms-vscode-remote.remote-ssh|ms-vscode-remote|0.124.0
Remote - SSH: Editing Configuration Files|ms-vscode-remote.remote-ssh-edit|ms-vscode-remote|0.87.0
WSL|ms-vscode-remote.remote-wsl|ms-vscode-remote|0.104.3
C/C++ DevTools|ms-vscode.cpp-devtools|ms-vscode|0.5.14
C/C++|ms-vscode.cpptools|ms-vscode|1.33.8
C/C++ Extension Pack|ms-vscode.cpptools-extension-pack|ms-vscode|1.5.1
PowerShell|ms-vscode.powershell|ms-vscode|2025.4.0
Remote Explorer|ms-vscode.remote-explorer|ms-vscode|0.5.0
Remote Repositories|ms-vscode.remote-repositories|ms-vscode|0.42.0
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
Color Highlight|naumovs.color-highlight|naumovs|2.8.0
Groovy Lint, Format and Fix|nicolasvuillamy.vscode-groovy-lint|NicolasVuillamy|4.2.1
psioniq File Header|psioniq.psi-header|psioniq|1.25.4
Sass (.sass only)|syler.sass-indented|syler|1.8.33
Even Better TOML|tamasfe.even-better-toml|tamasfe|0.21.2

A/B Experiments

```
vsliv368:30146709
pythonvspyt551cf:31249601
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
envsactivate1:31551504
cloudbuttont:31379625
3efgi100_wstrepl:31403338
ddidt:31399633
ec5jj548:31422691
cp_cls_t_966_ss:31526232
4je02754:31466945
8hhj4413:31478653
ge8j1254_inline_auto_hint_haiku:31490510
cp_cls_c_1081:31454833
conptydll_true:31498968
e9c30283:31461165
test_treatment2:31471001
46204921:31447328
ei9d7968:31496641
nes-extended-on:31455476
chat:31457767
8hig5102:31480529
89g7j272:31518289
i2gc6536:31499202
52612955:31516516
ghj88844:31499326
ddid_t:31478206
hmra_i5g22:31518061
7df3h592:31512476
cp_cls_t_1082:31535311
logging_enabled_new:31498466
j0d79568:31499440
jb_cp_cls_t_632:31543129
56dj4588:31512888
32d76977:31512328
ha629193:31508444
a1ije391_t:31540920
jbcp_cls_pctr_t:31531130
61138546:31518536
cp_intellij_t_nes:31548657
jf4hg949:31526829
ahp-both-windows:31556933
session_8:31532895
ihg5j128:31534457
f412h606:31551416
7g2b5551:31542111
enable_editor_pane_layout:31569726
allow-none:31555437
6i51c363:31551401
ac562147:31564510
c7c27ce7:31554789
1h923230:31564177
1532g621_copy:31554320
treatment-23-1:31555779
unuse_dynamic_mcp:31555281
0d8dfbc3:31570291
a1hcc538:31559322
0c1h4866:31566224
vrbsty_fls:31561059
session-mark-done:31558131
ai4g2856_c:31563074
5b8j3302:31564601
mangle-name-control:31569822
permission_prompt_control:1332567
ccr_pr_nudge_auto_review:1319472

```

Start by tracing the Remote - Tunnels invocation of code-tunnel.exe and compare the reported tunnel command with the CLI usage shown in the log. Confirm the correct server data argument and verify that Remote Tunnel Access starts without the unexpected-argument error on Windows.

Written by the indexing model from the issue text.