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3682752 - [Cloud Integration] Inbound HTTP 401 error caused by Client Certificate missing "Client Authentication" EKU

Symptom

Inbound Client Certificate Authentication towards Cloud Integration Runtime fails with HTTP 401 error, right after renewing the Client Certificate from your CA vendor.

In CPI server log, below error is seen:
"OpenSSL verify result code: 26"

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.


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Environment

  • Cloud Integration
  • SAP Integration Suite
  • SAP Business Technology Platform

Product

Cloud Integration all versions ; SAP Integration Suite all versions

Keywords

HTTP 401, unauthorized, Client Certificate Authentication, Client Certificate, SSL, OpenSSL, 26, 2-way SSL, X.509, , authentication, Extended Key Usage, EKU, Cloud Integration, CPI, SAP Integration Suite, Runtime, Sunsetting the client authentication EKU , KBA , LOD-HCI-PI-OPS , Cloud Operations , BC-SEC-SSF , Secure Store and Forward , BC-SEC-SSL , Secure Sockets Layer Protocol , Problem

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