# Unable to Reach Model Provider Opus4.5, Sonnet4.5 and Gemini 3 Pro

**URL:** <https://forum.cursor.com/t/unable-to-reach-model-provider-opus4-5-sonnet4-5-and-gemini-3-pro/147929>\
**Category:** Bug Reports\
**Created:** [January 4, 2026, 10:42am UTC](https://forum.cursor.com/t/unable-to-reach-model-provider-opus4-5-sonnet4-5-and-gemini-3-pro/147929 "2026-01-04T10:42:53Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![deanrie](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/deanrie/32/1263_2.png) [@deanrie](https://forum.cursor.com/u/deanrie)\
**Post date:** [January 4, 2026, 11:01am UTC](https://forum.cursor.com/t/unable-to-reach-model-provider-opus4-5-sonnet4-5-and-gemini-3-pro/147929/2 "2026-01-04T11:01:12Z")

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Hey, thanks for the report.

This kind of error is usually caused by an extension conflict or network settings. Let’s check a few things:

1. Check extensions:

- If you have Nx Console installed, uninstall it and restart Cursor (this is a known conflict)
- Launch Cursor with a clean profile from the terminal: `‌cursor --user-data-dir=%TEMP%\cursor-test` and try Agent mode

1. Disable HTTP/2:

- Press `CTRL+,` to open settings
- Search for “HTTP/2”
- Turn on “Disable HTTP/2”
- Restart Cursor

1. Collect diagnostics:

- Cursor Settings \> Network \> Run Diagnostics, then share a screenshot of the results
- Help \> Toggle Developer Tools \> Console, reproduce the error, and share a screenshot of the red errors
- Copy 2 to 3 new Request IDs after the error (Chat menu \> Copy Request ID)

1. Extra info:

- What’s your region or country?
- Are you using a VPN or proxy?
- What extensions do you have installed?

Similar cases:

- [Unable to reach Opus 4.5 (base and thinking)](https://forum.cursor.com/t/unable-to-reach-opus-4-5-base-and-thinking/145313)
- [Connection Error occurs depending on prompt content (Windows 11)](https://forum.cursor.com/t/connection-error-occurs-depending-on-prompt-content-windows-11/147767)

Try the steps above and let me know what you find.

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