The system has been up for over 2 weeks, fairly stable, but when I tried to login from console from firefox, I received the screen that said: Oops something wrong happened, return to the application using the button below. If I click the button, nothing happens and the same screen keeps showing up. I rebooted the server and the behavior is still the same. The server seems to be up - for example, https://.../oxauth/.well-known/openid-configuration is returning a screenful of information (removed history/cache before trying it).likewise https://../oxauth-rp/home.htm is also responding with a screenfull of information. I want to add some user details, so need to login to the server. Looking at the logs .../identity/logs/ I see it says "Unable to find valid certification path to requested target from sun.security.provider.certpath ... near the end of the logs file. So, it might have to do with certificate file. Given that it used to work till about a week ago, not sure what changed or where I should look to fix this problem. Can you help? Mohan.