curle_ssl_engine_initfailed
Moderate
cURL · libcurl & CLI
libcurl code CURLE_SSL_ENGINE_INITFAILED indicates ssl engine initfailed during TLS/HTTP protocol negotiation.
Quick Answer
Error code CURLE_SSL_ENGINE_INITFAILED on your cURL libcurl & CLI means: libcurl code CURLE_SSL_ENGINE_INITFAILED indicates ssl engine initfailed during TLS/HTTP protocol negotiation.. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Capture verbose output (-v / --trace) and isolate the exact phase where CURLE_SSL_ENGINE_INITFAILED appears.
2
Reproduce ssl_engine_initfailed with a minimal request against a known-good endpoint.
3
Validate protocol, TLS, DNS, proxy, and timeout options tied to TLS/HTTP protocol negotiation.
4
Adjust one option at a time until CURLE_SSL_ENGINE_INITFAILED clears and transfer completes successfully.
5
Lock the fix into scripts/clients and monitor for CURLE_SSL_ENGINE_INITFAILED regression.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
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