After installing new Java I believe, I can still connect to ISY from home internally, but no longer can access it remotely like I have for years using my external IP address and port forwarding.  I am getting an error saying my "CA Root Certificate is not trusted".  This was never an issue before.  I am a beginner when it comes to working with PCs.  I have no problem with ISY programming and playing with home automation, but not a clue how to install a trusted certificate or resolve this issue.  I searched and haven't found much information that makes any sense to me.  Please lead me in the right direction.  Thanks!  

I suspect you need to update the ISY firmware.  Click Help > About when logged into the admin console locallly and tell use the firmware and UI version numbers.

This is what I see...  

I see that it says internet access disabled.  I don't believe this was an issue before, but could be wrong.  Thank you for your help.

 

29 minutes ago, Lloyd in San Jose said:

This is what I see...  

I see that it says internet access disabled.  I don't believe this was an issue before, but could be wrong.  Thank you for your help.

 

Its not the issue. Your firmware does need to be updated though

I just updated the firmware and it works again.  Thanks for your help!

As pointed out update your firmware to v4.9.0  (there is also a 5.x branch, however don't dive in until you've done some reading, there are several caveats)

I'm confused about your expired certificate, because it's not a self signed certificate, so I can't help there.

I can tell you that in 2021 there is a better way to access your ISY remotely.  Close your ports, remove the port forwarding entirely and use the ISY portal.   Secure access via a cloud portal.  Yes it's an additional charge but less the $1.00/month.  In addition to secure remote access, you get Alexa / Google home integration and free access to cloud nodeservers.