>>Hi,
>>
>>I have seen the term "failing the F5 Healthcheck" used in conjunction to the web URL and SSL?
>>
>>Could someone, please, explain what it is? Especially "F5"?
>
>Maybe https://www.f5.com/ ?
>
>It looks like they offer some sort of advanced security product (I'm not familiar with the company or its products). It might be something like what other vendors call "Web Reputation" or some such. Maybe that message pops up when a protected machine visits a site considered to be disreputable.
>
>If this is what's happening your question should be asked of the IT support for the computers displaying those messages.

This question was in the email exchange between two IT people of the organization that uses my web application. They enabled SSL on the web server. Then one asking the other if the case of "failing the F5 Healthcheck" was checked. I didn't want to ask so that I don't look a complete newbie. Since you don't have a 100% definitive answer, it must be something that this organization uses and the term, maybe, specific to them. So far, they have not asked me to contribute. So, I will see what else I may find out. And so far, everything works.
Thank you.