Internal Error in Cursor IDE

[Yudin-num2]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I get an error when I try to make a request to an agent in the chat. Internal Error

Steps to Reproduce

Send message to chat

Expected Behavior

The agent must process the message and return a response, but there is a constant change of messages: “Planning next moves…” → “Reconnecting…” → “Planning next moves…” → …

Screenshots / Screen Recordings

Operating System

Windows 10/11

Version Information

Version: 2.6.18 (system setup)
VSCode Version: 1.105.1
Commit: 68fbec5aed9da587d1c6a64172792f505bafa250
Date: 2026-03-10T02:01:17.430Z (1 day ago)
Build Type: Stable
Release Track: Default
Electron: 39.6.0
Chromium: 142.0.7444.265
Node. js: 22.22.0
V8: 14.2.231.22-electron.0
OS: Windows_NT x64 10.0.19045

For AI issues: which model did you use?

Auto or GPT 5.3 Codex

For AI issues: add Request ID with privacy disabled

Request ID: 49f30b62-9a76-4188-b73f-d682095ae55a
[internal] Blob not found
hie: [internal] Blob not found
at I5A (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:34244:23755)
at x5A (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:34244:22658)
at M5A (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:34245:6285)
at Gou.run (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:34245:10400)
at async UOa.runAgentLoop (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:46808:10024)
at async X3u.streamFromAgentBackend (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:46862:9277)
at async X3u.getAgentStreamResponse (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:46862:13663)
at async bMe.submitChatMaybeAbortCurrent (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:34305:17597)

Does this stop you from using Cursor

Yes - Cursor is unusable

[deanrie]

Hey, thanks for the detailed report with the request ID and stack trace.

I can see your network diagnostics are all green, so it doesn’t look like a connection issue. The “Blob not found” error is a known issue, and a few users have run into it.

Please try this:

• Start a new chat (don’t continue the old one). This error is often tied to a corrupted session state.
• Instead of Auto, pick a specific model (for example, Claude Sonnet 4.6). We’ve seen cases where Auto fails but a specific model works.
• If that doesn’t help, try Ctrl+Shift+P > “Clear Editor History” and then restart Cursor.

We’ve passed this issue to the team. I don’t have an ETA yet, but your report helps us prioritize it.

Let me know if any of the steps above worked.