Error: Streaming responses are being buffered by a proxy in your network environment

[user385 (Sonublaze24)]

Describe the Bug

I applied these steps to resolve but nothing is working:

1. Open Settings (CMD/CTRL + ,)

2. Search for “HTTP/2”

3. Enable the “Disable HTTP/2” setting

4. Keep HTTP Compatibility Mode set to HTTP/1.1

5. Restart Cursor

6. Try temporarily connecting to a different network (like a mobile hotspot) to check if the issue is network-related

7. Clear your workspace data:

Press CMD/CTRL + Shift + P
Type and select “Clear Workspace Data”
Restart Cursor

Error:

PING:
[2025-07-25T07:56:13.770Z] Sending ping 1
[2025-07-25T07:56:18.777Z] Response: ‘ping’ in 5007ms
[2025-07-25T07:56:18.777Z] Sending ping 2
[2025-07-25T07:56:23.767Z] Response: ‘ping’ in 4990ms
[2025-07-25T07:56:23.767Z] Sending ping 3
[2025-07-25T07:56:29.389Z] Response: ‘ping’ in 5622ms
[2025-07-25T07:56:29.389Z] Sending ping 4
[2025-07-25T07:56:31.950Z] Response: ‘ping’ in 2561ms
[2025-07-25T07:56:31.950Z] Sending ping 5
[2025-07-25T07:56:36.912Z] Response: ‘ping’ in 4962ms
[2025-07-25T07:56:36.913Z] Result: Error: Response took 4962ms

CHAT:
[2025-07-25T07:56:13.770Z] Starting streamSSE
[2025-07-25T07:56:18.778Z] Response: ‘foo’ in 5007ms
[2025-07-25T07:56:19.777Z] Response: ‘foo’ in 999ms
[2025-07-25T07:56:20.780Z] Response: ‘foo’ in 1003ms
[2025-07-25T07:56:21.795Z] Response: ‘foo’ in 1015ms
[2025-07-25T07:56:22.821Z] Response: ‘foo’ in 1026ms
[2025-07-25T07:56:23.776Z] Result: Error: Streaming responses are being buffered by a proxy in your network environment

AGENT:
[2025-07-25T07:56:13.771Z] Starting stream
[2025-07-25T07:56:13.771Z] Pushing first message
[2025-07-25T07:56:18.839Z] Response: ‘foo’ in 5068ms
[2025-07-25T07:56:19.340Z] Pushing next message
[2025-07-25T07:56:27.540Z] Response: ‘foo’ in 8701ms
[2025-07-25T07:56:28.041Z] Pushing next message
[2025-07-25T08:13:08.382Z] Result: Error: Incomplete response (2/2 valid chunks)

Steps to Reproduce

While running the Network Diagnostics giving the error everytime.

Screenshots / Screen Recordings

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Cursor version:
Version: 1.2.4
VSCode Version: 1.99.3
Commit: a8e95743c5268be73767c46944a71f4465d05c90
Date: 2025-07-10T16:53:59.659Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Darwin arm64 24.3.0

Does this stop you from using Cursor

Yes - Cursor is unusable

[Richard_Russoniello (Richard)]

I’m seeing the same issue. Has this issue be resolved?

[condor (Condor (Tee))]

@Richard_Russoniello could you check if switching in Network settings from HTTP/2.0 to 1.1 does improve this for you.

Usually it has to do with internet provider or corporate network restrictions.

[deanrie]

Hey, thanks for the report. Could you clarify if you have a VPN or a configured proxy server on this computer? Also, try adding Cloudflare DNS in your network’s system settings. Add the address 8.8.8.8.