Unable to use agent mode, constant error -96

Bug Reports
1

Describe the Bug

read Unknown system error -96 [internal], unable to run in agent mode

Steps to Reproduce

NA

Expected Behavior

Agent mode should work flawlessly

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.2.4 (Universal)
VSCode Version: 1.99.3
Commit: a8e95743c5268be73767c46944a71f4465d05c90
Date: 2025-07-10T16:55:16.443Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Darwin arm64 24.5.0

Does this stop you from using Cursor

Yes - Cursor is unusable

2

hi @ts133466 and welcome to Cursor Forum.

Thank you for the bug report.

To help check how and when this occurs, could you please share a screenshot of the error and provide more information when it occurs.

Please also check Help > Developer Tools > Console and post here any error messages.

3

image
image978×308 32 KB

it started to appear since yesterday, and it is happening almost every time. It is working occasionally by starting a new chat with small task. but when the working file started to increase, this error occur again.

Sharing the request info here.

Request ID: 5b062740-906c-47af-a87d-0df298cf4e70
ConnectError: [internal] read Unknown system error -96
at x9a.$endAiConnectTransportReportError (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:4757:223764)
at hir.S (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:492:17741)
at hir.Q (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:492:17519)
at hir.M (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:492:16607)
at hir.L (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:492:15708)
at Bwt.value (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:492:14500)
at ve.B (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:48:2398)
at ve.fire (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:48:2617)
at Git.fire (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:4744:10379)
at u.onmessage (vscode-file://vscode-app/Applications/Cursor.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js:6968:12271)

1 Like
4

Thank you for the details.

Are you using any MCP or custom API key?

5

Not using MCP and custom API key

6

Great, thanks for clarifying. Cursor team is looking into your and few other issues which might be related. Narrowing down potential causes helps.

7

Hey, which model are you using?

8

i use claude 4 and auto mode.

9

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