Network diagnostics loading infinitely

[a-carlikecar]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

DNS, HTTP/2, SSL are loading infinitely in HTTP/2; DNS, SSL are loading infinitely in HTTP/1.1; tip: my team subscribe business, in their computer are work well; i had reinstall the system again, not work, cursor is the only one software in my computer;

Steps to Reproduce

i reinstall my computer(windows 11), then i install cursor v1.4.5, cureor is only software in my computer;
open cursor
open setting
click network
click “running diagnostic”
switch to http1.1
click “running diagnostic”

Expected Behavior

because the network work incorrectly, mcp also not work;

Screenshots / Screen Recordings

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

Additional Information

device info:
设备名称 freelog-go
处理器 Intel(R) Core™ i7-10700 CPU @ 2.90GHz (2.90 GHz)
机带 RAM 32.0 GB (31.8 GB 可用)
设备 ID 1B1E927E-0B36-4D6B-A934-F18CCFE944EA
产品 ID 00489-60000-00000-AA750
系统类型 64 位操作系统, 基于 x64 的处理器
笔和触控 没有可用于此显示器的笔或触控输入

windows info:
版本 Windows 11 专业中文版
版本号 24H2
安装日期 ‎2025/‎8/‎22
操作系统版本 26100.4946
体验 Windows 功能体验包 1000.26100.197.0

internet info:
聚合链接速度(接收/传输): 100/100 (Mbps)
IPv6 地址: 240e:3ba:3024:56a0:4c27:5d36:f69e:a98d
本地链接 IPv6 地址: fe80::be18:6351:a769:404b%6
IPv6 默认网关： fe80::127c:61ff:fe39:86ee%6
IPv6 DNS 服务器: 240e:3ba:3024:56a0::1 (未加密)
240e:3ba:3024:56a0::1 (未加密)
IPv4 地址: 192.168.2.185
IPv4 DNS 服务器: 192.168.2.1 (未加密)
制造商: Realtek
描述: Realtek PCIe GbE Family Controller
驱动程序版本: 1.0.0.14
物理地址(MAC): 24:4B:FE:97:AD:15

Does this stop you from using Cursor

Yes - Cursor is unusable

[a-carlikecar]

type in cmd “ping ap2.cursor.sh”

result: always “timeout”

[a-carlikecar]

chrome access “https://api2.cursor.sh“ is ok

[deanrie]

Hey, it seems there’s a network issue. Are you using a VPN, proxy, or any software that controls your internet connection? Can you switch to another network, like a mobile network if available? Also, ensure your network isn’t blocked by a firewall or antivirus.

Additionally, try adding Google’s DNS to your network settings. Use the address 8.8.8.8. Some users have found this resolves the issue.

[a-carlikecar]

without VPN, proxy, after reinstall system, i install the cursor, which is the only one software in my computer; the computer without wireless network card, so can not switch to another network; i also close all firewall and antivirus, and add 8.8.8.8 to my DNS, not work. tip: here is china;

[deanrie]

Could you try disabling HTTP2 and try again?

[a-carlikecar]

not work

[a-carlikecar]

check your computer, if without VC++, install it; it resolve the problem;