Your connection is encrypted using an obsolete cipher suite

I have deployed my WebApp as a standalone exe in windows 2012 r2 Server with SSL cert installed. When browsing from Mobile device chrome browser, I am getting this error:

As I am using Xojo builtin web server, may I know is there any ways to change the cipher suites to support strong ciphers instead?

Your certificate uses SHA1 maybe?
That is outdated.

[quote=322767:@Christian Schmitz]Your certificate uses SHA1 maybe?
That is outdated.[/quote]
Hello Christian,

I do not have issue with desktop browser such as chrome or firefox. From firefox browser, this is the info I am getting.

So, I believed my comodo certicate cannot be outdated.