Ensure the WebDAV URL is correctly formatted and accessible. Test the URL in a browser to confirm access with your credentials. If your server uses a self-signed or untrusted SSL certificate, enable the "Bypass SSL certificate verification" option in Enpass. This allows secure data transfer without certificate identity verification.Confirm that your WebDAV server permits directory creation and has the necessary write permissions, as Enpass needs to create and modify files for syncing. Disconnect sync on all devices. On your WebDAV server, rename the vault.enpassdbsync file (e.g., to oldvault.enpassdbsync). Then, reconnect each device to establish a fresh sync. f the issue persists, consider reaching out to Enpass support with details like error messages and logs for more tailored assistance.