Stream closed with error code NGHTTP2_INTERNAL_ERROR [internal]

[Crested5386]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I tried resending the command a couple times after it lost connection in the middle of an auto run, but it’s just not working. I have no vpn active

Request ID: ea7f21e4-9e14-47be-b452-9c460e49986a
ConnectError: [internal] Stream closed with error code NGHTTP2_INTERNAL_ERROR
at yel.$endAiConnectTransportReportError (vscode-file://vscode-app/c:/Users/Crested/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:4918:251962)
at tcr._doInvokeHandler (vscode-file://vscode-app/c:/Users/Crested/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:493:20860)
at tcr._invokeHandler (vscode-file://vscode-app/c:/Users/Crested/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:493:20602)
at tcr._receiveRequest (vscode-file://vscode-app/c:/Users/Crested/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:493:19367)
at tcr._receiveOneMessage (vscode-file://vscode-app/c:/Users/Crested/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:493:18189)
at TSt.value (vscode-file://vscode-app/c:/Users/Crested/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:493:16283)
at ve._deliver (vscode-file://vscode-app/c:/Users/Crested/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:49:2962)
at ve.fire (vscode-file://vscode-app/c:/Users/Crested/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:49:3283)
at Mst.fire (vscode-file://vscode-app/c:/Users/Crested/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:4905:12154)
at d.onmessage (vscode-file://vscode-app/c:/Users/Crested/AppData/Local/Programs/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:7030:18167)

Steps to Reproduce

I’m not certain, I was just using auto for a while and it suddenly lost connection.

Expected Behavior

It connects and lets me use auto

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.4.5 (user setup)
VSCode Version: 1.99.3
Commit: af58d92614edb1f72bdd756615d131bf8dfa5290
Date: 2025-08-13T02:08:56.371Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.26100

Does this stop you from using Cursor

Yes - Cursor is unusable

[shofixti244 (Shofixti)]

Getting the same here, started about 10-15 mins ago.

[Crested5386]

Same, mine started doing that about 10ish minutes ago. It just randomly started working.

Edit: it worked for about 1 minute lol

[launchthatbrand]

Same Issue. Probably related to Cursor Status - Elevated Background Agent Startup Failures

[RyanGonzales]

Experiencing the same issue here, especially with thinking models. Fair amount of success with auto, but it’s not always a sure bet. Hasn’t slowed down dev much, but it does ■■■■ when it meanders through a larger task and fails.

[lazniak (Paul Lazniak)]

I have same issue.

[Dmitrii_Pushkin]

I have the same problem

[bbsdy]

Same here, I thought it was because I made two AIs argue with each other.

[LimePencil]

Same here

[joeldg (Joel De Gan)]

Same here, start a few minutes ago

[sanjeed5 (Sanjeed)]

Can you try if this works?
enable HTTP/1.1 fallback in app settings (not Cursor settings): press CMD/CTRL + ,, search for HTTP/2, then enable Disable HTTP/2. This forces HTTP/1.1 usage and resolves the issue.

Can you also share Network Diagnostics?
Go to Cursor Settings > Network and click Run Diagnostics. This will test your connection to Cursor’s servers and help identify any network-related issues that might be affecting AI features, updates, or other online functionality.

[condor (Condor (Tee))]

hi everyone, our system had a temporary outage around that time which has already stabilized. Please let me know if you still have the same issue now.