Chrome still showing red https logo even after adding the certificate to trusted root authorities store (Internal-use self-signed SSL Cert)

I think Mr. Leahy's suggestion to use a name with DNS-like qualification would work. Here's Chromium patch information related to the error:

http://groups.google.com/a/chromium.org/group/chromium-checkins/msg/9fe59a981479aa44?pli=1 (r62178)

If the host name denotes an "intranet host", which in the code means one with either no dot in the name or a dot at the end, then it is considered non-unique, and you get the warning. After quickly looking through other patches involving the warning, I didn't find a way to tell Chrome to relax about the warning.

Im not sure this will apply to your question but I had a similar experience a few days back where chrome would show an insecure site (red cross through the EV ssl) In my case it was because some links from google apis were over http not httpsthus MAKE SURE ALL YOUR EXTERNAL RESOURCES ARE CALLED OVER HTTPS not http!

I stumbled across the same issue today and found a stunningly simple solution:It turns out that a bad certificate override is displayed during the entire chrome session even if the certificate has been validated or renewed in the meantime.

Restarting chrome fixes that.

If the certificate warning is still present after the restart, then You will have to look at the other answers.