Hi, I set up Synology NAS server and allowed only HTTPS access for the web interface. It has self-signed certificate, but as it is only for internal purposes, it is not any problem. In Firefox, I went to the web interface. Of course, Firefox complained about invalid certificate. So that I added the secutiry exception. It was working fine, but as requested by our network admin, I had to change the network settings and set domain name. It seems Firefox has somehow related the certificate with the old network settings and it does not allow me to acces the site now. And there is no possibility to add the security exception, nothing. Firefox just points to https://support.mozilla.org/en-US/kb/what-does-your-connection-is-not-secure... I checked Firefox settings, but I didn't find respective certificate neither domain. So how can I add/change the security exception settings to acces the site now? Thanks, V. -- Vojtěch Zeisek Komunita openSUSE GNU/Linuxu Community of the openSUSE GNU/Linux https://www.opensuse.org/ https://trapa.cz/