Connection problems with various models despite clean network diagnostics and having tried to switch to HTTP/1.1

Support Bug Reports
1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Since several hours, and with various modes (Agend, Ask, Plan) and various models (Composer 1, Sonnet 4.5 thinking, GPT 5.2 thinking) I consistently cannot connect to any agents any more via the chat interface, and consistently get instead error messages like the one shown below:

Request ID: cf75f178-4c82-4a86-a7a6-669603868254
{“error”:57,“details”:{“title”:“Provider Error”,“detail”:“We’re having trouble connecting to the model provider. This might be temporary - please try again in a moment.”,“isRetryable”:true,“additionalInfo”:{},“buttons”:,“planChoices”:},“isExpected”:true}
[resource_exhausted] Error
NTe: [resource_exhausted] Error
at tpf (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:9097:38348)
at Xmf (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:9097:37251)
at gpf (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:9098:5088)
at yva.run (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:9098:9098)
at async Wyt.runAgentLoop (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:34198:57104)
at async ngc.streamFromAgentBackend (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:34247:7835)
at async ngc.getAgentStreamResponse (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:34247:8576)
at async OTe.submitChatMaybeAbortCurrent (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:9172:14624)
at async Xi (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:32996:3808)

Note that I already tried unsuccessfully changing the HTTP compatibility mode to HTTP/1.1 and then restarting.

Also, when running the network diagnostics accessible via the Cursor settings, all tests come back without failures, but the reported problem persists. Below are the relevant logs from the Chat and Agent from that test.

[2026-02-06T08:15:54.936Z] Starting streamSSE
[2026-02-06T08:15:55.338Z] Response: ‘foo’ in 402ms
[2026-02-06T08:15:56.339Z] Response: ‘foo’ in 1001ms
[2026-02-06T08:15:57.338Z] Response: ‘foo’ in 999ms
[2026-02-06T08:15:58.338Z] Response: ‘foo’ in 1000ms
[2026-02-06T08:15:59.338Z] Response: ‘foo’ in 1000ms
[2026-02-06T08:16:00.341Z] Result: true

[2026-02-06T08:15:54.936Z] Starting stream
[2026-02-06T08:15:54.936Z] Pushing first message
[2026-02-06T08:15:55.587Z] Response: ‘foo’ in 651ms
[2026-02-06T08:15:56.087Z] Pushing next message
[2026-02-06T08:15:56.533Z] Response: ‘foo’ in 946ms
[2026-02-06T08:15:57.035Z] Pushing next message
[2026-02-06T08:15:57.436Z] Response: ‘foo’ in 903ms
[2026-02-06T08:15:57.937Z] Pushing next message
[2026-02-06T08:15:58.539Z] Response: ‘foo’ in 1103ms
[2026-02-06T08:15:59.039Z] Pushing next message
[2026-02-06T08:15:59.438Z] Response: ‘foo’ in 899ms
[2026-02-06T08:15:59.438Z] Result: true

This might be related to the following post, but the fix suggested there does not help (and I am in Luxembourg, not Ukraine).

Steps to Reproduce

On my system, every chat input seems to result in this error.

Expected Behavior

No “Provider Error”, but instead the agent should start working on the task assigned.

Screenshots / Screen Recordings

Screenshot_Cursor.png
Screenshot_Cursor.png1520×1740 119 KB

Operating System

MacOS

Version Information

Version: 2.4.28
VSCode Version: 1.105.1
Commit: f3f5cec40024283013878b50c4f9be4002e0b580
Date: 2026-02-03T00:56:18.293Z (3 days ago)
Build Type: Stable
Release Track: Default
Electron: 39.2.7
Chromium: 142.0.7444.235
Node.js: 22.21.1
V8: 14.2.231.21-electron.0
OS: Darwin arm64 23.6.0

For AI issues: which model did you use?

See above.

Does this stop you from using Cursor

Yes - Cursor is unusable

Composer 1 not available at the moment (trouble connecting provider)
OpenAI Models not working in IDE or CLI with "reconnecting" and "resource_exhausted"
Trouble connecting to the model provider for all Anthropic and Open AI models
3

Please let me know what kind of diagnostic tests I may run on my system that could help you to analyse or hopefully even reproduce the issue.

4

Hey, thanks for the report.

I can see this started today. There was a 6-hour incident on Anthropic’s side on Feb 4–5, so the issue might already be gone. Can you try again?

Please try:

  1. Cursor Settings > Models

    • Make sure “Override OpenAI Base URL” is turned off
    • If you have any third-party API keys (OpenAI, Anthropic, etc.), temporarily disable them (toggle off)

  2. Cursor Settings > Tools & MCP

    • Check if you have any MCP servers connected
    • If you do (especially Perplexity MCP), try disabling them temporarily

  3. Fully sign out and sign back in (Cursor Settings > Sign Out, then Sign In)

  4. Create a new test chat in a different project

In similar cases, this helped:

Let me know if it still doesn’t help, and we’ll take a deeper look using the request ID.

5

Thanks for responding so quickly!

I tried this and it resolved the error, thanks!

(I defined some own custom MCP servers, I need to dig into why they suddenly cause issues – they were working fine before.)

Best,
Torsten

7

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