Hey, thanks for the detailed report and the request ID.
Since this only happens on one specific device and everything else checks out network diagnostics are clean, you reinstalled, reindexed, and tried all models, let’s narrow it down further:
Test in an empty folder: File > Open Folder, pick a completely empty directory, open a new chat, type hello. Does it respond? This rules out project specific issues.
Disable all extensions: Run Cursor from terminal with cursor --disable-extensions, then try chatting. Extension conflicts are the most common cause of device specific hangs like this.
Console logs: Open Help > Toggle Developer Tools > Console tab. Try sending a message, wait for it to get stuck, then copy and paste whatever errors appear in the console. This will tell us where exactly it’s failing.
Network specifics on this machine: Is this device on a different network than the ones that work? Any VPN, proxy, firewall, or corporate network setup that differs?
The team is aware of this class of issues. Your request ID helps. Let me know what you find with the steps above, especially 1 and 2, since those are the fastest way to isolate the cause.
1 & 2. Already tested, niot working
4. No, the only difference between the 2 machines is the OS, the other one is windows and it doesnt have some extensions and stuff that my main one has
3. Errors:
McpError: MCP error -32000: Connection closed
Error: cannot encode field agent.v1.CursorRule.type to JSON:
cannot encode field agent.v1.CursorRuleType.agent_fetched to JSON:
cannot encode field agent.v1.CursorRuleTypeAgentFetched.description to JSON
[composer] No first token received within 2s → 16s
[transport] Connect error:
[unauthenticated] You must be a team member to access this resource
I decided to cut some unrelated errors aswell as some information i dont want to post in a forum, i can send the entire console by mail tho
These console errors are really helpful. I see a few things worth checking:
Error [unauthenticated] You must be a team member to access this resource
This looks suspicious, since you have an individual Ultra account. Try this:
Cursor Settings > Sign Out, then fully quit Cursor and sign in again
Error cannot encode field agent.v1.CursorRule.type to JSON
This looks like something is broken in your rules config. Check:
Do you have .cursorrules or .cursor/rules files in the project? If yes, try temporarily deleting or renaming them and see if the agent works without them
In Cursor Settings > Rules, do you have anything in global rules? Try clearing them temporarily
McpError: MCP error -32000: Connection closed
Do you have MCP servers configured? Try temporarily disabling all MCP servers in settings and test again.
Start with step 1 first. An auth issue could be the root cause of everything else.