- Install KeepPassXC, import .kbdx database
- Go in Tools -> Settings -> Browser Integration, Enable integration with installed browsers (i.e: Firefox)
- Open Browser (i.e: Firefox)
- uninstall KeePassHttp-Connector
- install KeePassXC-Browser
- In the KeePassXC-Browser settings, connect to KeepassXC database
- Open a site, check the credentials are filled in and authentication works.