OpenSSL v3 support in ACE/TAO

[ChetanS-arctera]

Hi Team,

I wanted to check whether ACE/TAO currently supports OpenSSL v3.x.
I couldn’t find any mention of OpenSSL v3 compatibility in the official DOCGroup documentation or release notes.

Could you please confirm if:

OpenSSL v3.x is officially supported in ACE 7.x or 8.x, or Any release.

if any patches or configuration changes are needed for it to work correctly?

Any guidance or reference to related documentation would be really helpful.

Thanks,
Chetankumar

[jwillemsen]

There is no full OpenSSL v3.x support yet, there are known compile warnings, and I have also seen some test failures, see the open issues

[ferchor2003]

I'm late to this discussion. April 2026 I do not see an open issue for this. I did not see any mention of Open SSL v3.x support on the last release notes. Can you update on current state of OpenSSL v3.x support?

[esohns]

I have been using ACE_SSL with OpenSSL v3.x for a while. Some compile warnings aside it seems to work just fine. There is no Proactor support for SSL connections though, currently it only works with the Reactor.