# Connection Error - Connection failed **URL:** \ **Category:** Bug Reports\ **Created:** [November 14, 2025, 2:37pm UTC](https://forum.cursor.com/t/connection-error-connection-failed/142627 "2025-11-14T14:37:06Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Manoj\_s](https://avatars.discourse-cdn.com/v4/letter/m/5e9695/32.png) [@Manoj\_s](https://forum.cursor.com/u/Manoj_s)\ **Post date:** [November 14, 2025, 2:37pm UTC](https://forum.cursor.com/t/connection-error-connection-failed/142627/1 "2025-11-14T14:37:06Z")
### Where does the bug appear (feature/product)? Cursor IDE ### Describe the Bug Cursor stops working after every prompt Connection failed. If the problem persists, please check your internet connection or VPN Even though the internet is stable and I dont use any VPN. ### Steps to Reproduce give a prompt to the agent and wait for 30 seconds and it stops working ### Operating System Windows 10/11 ### Current Cursor Version (Menu → About Cursor → Copy) Version: 2.0.77 (user setup) VSCode Version: 1.99.3 Commit: ba90f2f88e4911312761abab9492c42442117cf0 Date: 2025-11-13T23:10:43.113Z Electron: 37.7.0 Chromium: 138.0.7204.251 Node.js: 22.20.0 V8: 13.8.258.32-electron.0 OS: Windows\_NT x64 10.0.22631 ### For AI issues: which model did you use? Sonnet 4.5 ### For AI issues: add Request ID with privacy disabled Request ID: a42dd94c-fdb3-413d-b1a4-d2c2df5ad188 ### Does this stop you from using Cursor Yes - Cursor is unusable ---
**Author:** ![deanrie](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/deanrie/32/1263_2.png) [@deanrie](https://forum.cursor.com/u/deanrie)\ **Post date:** [November 14, 2025, 3:52pm UTC](https://forum.cursor.com/t/connection-error-connection-failed/142627/2 "2025-11-14T15:52:59Z")
Hey, thanks for the report. This is a known connection issue. Please try these steps in order: 1. Disable HTTP/2 (most common fix): - Open Cursor Settings `Ctrl+,` - Search for “HTTP/2” - Enable “Disable HTTP/2” - Restart Cursor 1. Check MCP servers (if you have any configured): - Cursor has an 80-tool limit - Disable MCP servers you’re not actively using 1. Check firewall/antivirus: - Windows may need to re-allow internet access for the updated app version 1. Run network diagnostics: - Cursor Settings → Network → Run Diagnostics Most users resolve this with step 1. Let me know if that helps. ---
**Author:** ![Gustavo\_Silva](https://avatars.discourse-cdn.com/v4/letter/g/eada6e/32.png) [@Gustavo\_Silva](https://forum.cursor.com/u/Gustavo_Silva)\ **Post date:** [November 14, 2025, 4:03pm UTC](https://forum.cursor.com/t/connection-error-connection-failed/142627/3 "2025-11-14T16:03:02Z")
Try accessing a new chat; the error will no longer occur. ---
**Author:** ![nrsimha](https://avatars.discourse-cdn.com/v4/letter/n/35a633/32.png) [@nrsimha](https://forum.cursor.com/u/nrsimha)\ **Post date:** [November 20, 2025, 7:39pm UTC](https://forum.cursor.com/t/connection-error-connection-failed/142627/4 "2025-11-20T19:39:21Z")
That doesn’t solve for me. It has issues with connection in new chat too. Until today it works nice, and internet connection works well. ---
**Author:** ![nrsimha](https://avatars.discourse-cdn.com/v4/letter/n/35a633/32.png) [@nrsimha](https://forum.cursor.com/u/nrsimha)\ **Post date:** [November 20, 2025, 7:49pm UTC](https://forum.cursor.com/t/connection-error-connection-failed/142627/5 "2025-11-20T19:49:55Z")
Didn’t help for me. Seems there is some outage as network diagnostics shows “[unknown] Network disconnected“ ---
**Author:** ![system](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/system/32/99069_2.png) [@system](https://forum.cursor.com/u/system)\ **Post date:** [December 12, 2025, 7:50pm UTC](https://forum.cursor.com/t/connection-error-connection-failed/142627/6 "2025-12-12T19:50:00Z")
Closed on December 12, 2025, 7:50pm UTC This topic was automatically closed 22 days after the last reply. New replies are no longer allowed.