[Issue] Blank view with data explorer

[mburtin]

As indicate here, I have encountered an issue with the Data Explorer in the Data View of a CSV file. I already try to reinstall Positron (by clean the cache in AppData) without succes. This has occurred since few versions. When I toggle to Dev mode, the only error that appears in the console after 30 seconds is:

Error: positron-duckdb.dataExplorerRpc not registered within 30 seconds at vscode-file://vscode-app/c:/Users/mburtin/AppData/Local/Programs/Positron/resources/app/out/vs/workbench/workbench.desktop.main.js:714791:18

Positron info:

Positron Version: 2025.10.0 (user setup) build 88
Code - OSS Version: 1.103.0
Commit: 9b22e9b
Date: 2025-09-15T07:32:32.435Z
Electron: 37.2.3
Chromium: 138.0.7204.100
Node.js: 22.17.0
V8: 13.8.500258-electron.0
OS: Windows_NT x64 10.0.22631

Additional note: My university network use a proxy server (I don't know if this could be related). And I don't have much more information about it.

[juliasilge]

Thank you for this report! We're not able to reproduce the problem on our side but would like to get to the bottom of it.

• You mentioned your university network and a proxy. Is this a regular local session of Positron? Not a remote SSH session?
• Do you see any other problems related to the proxy and Positron, like Help/Viewer can be blank due to inappropriate HTTP proxy use #8426 or Cannot start R or Python sessions: HttpError HTTP request failed #9215? or Help server sometimes throws 502s when requesting help in fresh positron session #3543
• Would you be up for trying out some experiments with the NO_PROXY env var to see if that is the source of the problem? Something like this:

NO_PROXY = "localhost,127.0.0.1,::1"

[mburtin]

I use a regular session of Positron, no SSH. For the issues linked, I do have the #8426, but NO_PROXY = "localhost,127.0.0.1,::1" doesn't solve the issue with the data explorer.

[juliasilge]

Thank you for the info! 🙌

I have opened #9509 to track and prioritize a fix for this.