I just updated to the version below and now it doesn’t work anymore, getting the connection error all the time. I restarted my Mac, the app, logged out and in, clear the cache, and nothing. Is just broken. ed8819e5-2e97-4621-bb32-8dd7ca351124 Version: 0.47.5 (Universal) VSCode Version: 1.96.2 Co…

Same here. After the update, all connections fail with the following message: Connection failed. If the problem persists, please check your internet connection or VPN. Version: 0.47.5 (user setup) VSCode Version: 1.96.2 Commit: 53d6da1322f934a1058e7569ee0847b24879d180 Date: 2025-03-14T21:53:57.9…

Most people have this either Corporate/vpn blocking access Router issues (not kidding, people restarted routers and they report to be able to connect) Local firewall not accepting updated app as being the same, may need re-approval for internet connections … many causes possible … I guess the Cur…

To clarify, you may need to disable the HTTP/2 setting if that protocol is not supported in your network! We’re hoping to add auto-detection for this in the future.

Can you clarify how to disable it? I’m using cursor and I cannot see this option anywhere. In the tutorial, it says You can enable this yourself in the app settings (not the Cursor settings), But i don’t understand what that means.

I had this issue the other day. What I found was that one of the MCP servers I had added was causing the issue. After figuring out which MCP server it was I disabled it. Then the chats started working again.

You can find the settings by pressing CMD+, (comma) to open the VSCode-style application settings. The Cursor settings page is different, hence my comment to make the distinction.

I am currently having the same issue. Only for Anthropic models. @ntyagi @totalnomad are you seeing the same thing? Do other models work that aren’t claude? openai? deepseek?

I’m seeing the same error, but it only happens on the first attempt per each message. I’ll ask something in the chat, get the error, and then hit the “Try again” button and it works. Then it fails on my next message; I hit retry; it works. Repeat.

Connection failed. If the problem persists, please check your internet connection or VPN

Support Bug Reports

Worry March 18, 2025, 8:47am 4

I had the same problem as you until I checked “Disable Http2” and it was solved

If the problem persists, please check your internet connection or VPN, or email us at [email protected]

Constant connection error

[Mitigated] HTTP/2 Connection Failures with SSLV3_ALERT_HANDSHAKE_FAILURE, primary affecting users in Ukraine

Topic		Replies	Views
Cursor stops working - Connection Error Bug Reports java	118	5016	December 21, 2025
[Mitigated] HTTP/2 Connection Failures with SSLV3_ALERT_HANDSHAKE_FAILURE, primary affecting users in Ukraine Bug Reports	193	4507	February 20, 2026
Connection failed... again Bug Reports	61	5480	April 2, 2025
Constant failures "Connection failed" Bug Reports	41	1244	September 11, 2025
Slow Request + High Ping on Network Diagnostics Bug Reports	89	4652	November 14, 2025

Connection failed. If the problem persists, please check your internet connection or VPN

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