Installing extension doesn't work - DotRush

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1

Had a similar issue a few weeks ago with Dev containers and Console Ninja and now this.

Very similar stack trace in output - I was having issues with it and reinstalled it and now lost my theme.

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3

Hi there!

We detected that this may be a bug report, so we’ve moved your post to the Bug Reports category.

To help us investigate and fix this faster, could you edit your original post to include the details from the template below?

Bug Report Template - Click to expand

Where does the bug appear (feature/product)?

  • Cursor IDE
  • Cursor CLI
  • Background Agent (GitHub, Slack, Web, Linear)
  • BugBot
  • Somewhere else…

Describe the Bug
A clear and concise description of what the bug is.

Steps to Reproduce
How can you reproduce this bug? We have a much better chance at fixing issues if we can reproduce them!

  1. …
  2. …
  3. …

Expected Behavior
What is meant to happen here that isn’t working correctly?

Screenshots / Screen Recordings
If applicable, attach images or videos (.jpg, .png, .gif, .mp4, .mov)

Operating System

  • Windows 10/11
  • MacOS
  • Linux

Version Information

  • For Cursor IDE: Menu → About Cursor → Copy
  • For Cursor CLI: Run agent about in your terminal
IDE:
Version: 2.xx.x
VSCode Version: 1.105.1
Commit: ......

CLI:
CLI Version 2026.01.17-d239e66

For AI issues: which model did you use?
Model name (e.g., Sonnet 4, Tab…)

For AI issues: add Request ID with privacy disabled
Request ID: f9a7046a-279b-47e5-ab48-6e8dc12daba1
For Background Agent issues, also post the ID: bc-…

Additional Information
Add any other context about the problem here.

Does this stop you from using Cursor?

  • Yes - Cursor is unusable
  • Sometimes - I can sometimes use Cursor
  • No - Cursor works, but with this issue

The more details you provide, the easier it is for us to reproduce and fix the issue. Thanks!

5

Hey, I see you’re having trouble installing extensions. Based on the net::ERR_FAILED and OTLPExporterError errors, this might be related to your network or an extension host issue.

A few things to check:

  1. Network Diagnostics
    Cursor Settings > Network > Run Diagnostics
    Please send the results.

  2. What Cursor version are you on?
    Menu > About Cursor > Copy
    I want to check if you’re on 2.4.13 to 2.4.14, since those versions had extension host issues.

  3. Workarounds

  • Try enabling Beta Updates (Cursor Settings > Beta) and update. Similar bugs were fixed in 2.4.7+
  • Manual install: download the VSIX from Open VSX Registry and install via “Install from VSIX”
  • Check VPN, firewall, or antivirus, they might block marketplace downloads
  1. Disable HTTP/2
    If you’re on a corporate network or using a proxy:
    Settings > search “HTTP/2” > enable “Disable HTTP/2”

Let me know your Cursor version and the diagnostics results, and try the workarounds above. If the manual VSIX install also fails, that’ll help confirm if this is a network issue or an extension host issue.

6

Hi @deanrie
Thanks for the response, it seems to work now.

I have a similar issue with Biome.

The VSIX picker never works - it wont let me pick anything maybe theres a work around on MacOS I’m new to Macs so I don’t know how to force it to be able to be picked

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7

Yes, it looks like when Cursor suggests downloading the extension manually, it downloads it without the .vsix extension. Try renaming the file.

Or try downloading it from the extension’s page: Open VSX Registry

8

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