From 2 March 2026, newly issued SSL certificates from the provider HARICA will no longer contain an Online Certificate Status Protocol (OCSP) responder URL in the Authority Information Access (AIA) extension by default. This may affect communication between clients and servers.
Certificates issued before this date with OCSP support will remain valid and functional until they expire.
Operators who use SSL certificates from HARICA should therefore check with the respective manufacturers whether OCSP is mandatory for their systems. If necessary, it is recommended to switch to current versions or suitable alternatives to ensure secure operation.
Further information is available at: news.harica.gr/article/ocsp-deprecation/
If you have any questions, please use the IT Security Servicedesk form.