Where does the bug appear (feature/product)? Cursor IDE Describe the Bug Chat with any models doesnt work 314368:error:10000410:SSL routines:OPENSSL_internal:SSLV3_ALERT_HANDSHAKE_FAILURE:....\third_party\boringssl\src\ssl\tls_record.cc:486:SSL alert number 40 [internal] Connection failed. If th…

Hey, thanks for the report. This is a known issue with HTTP/2 and the SSL handshake. Try this: App Settings Ctrl+, → search for “HTTP/2” → enable “Disable HTTP/2” → restart Cursor Check if chat works after that If it didn’t help, or if you want to dig deeper: Cursor Settings → Network → Run Di…

Ctrl+K to generate command trst Connection failed. If the problem persists, please check your internet connection or VPN

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Colin (Colin) Split this topic January 21, 2026, 12:25pm 2

4 posts were merged into an existing topic: [Known Issue] HTTP/2 Connection Failures for Users in Ukraine (SSLV3_ALERT_HANDSHAKE_FAILURE)

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Ctrl+K to generate command trst Connection failed. If the problem persists, please check your internet connection or VPN

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