Ledger Connected But Cannot Sign A Transaction may happen even when your hardware wallet appears connected and ready. Possible causes include outdated device firmware, incorrect application settings, browser compatibility problems, or a blockchain network mismatch. Begin by checking your device status and confirming that the appropriate cryptocurrency application is running. Update trusted wallet software when necessary and reconnect your device using a reliable USB connection. Avoid approving unexpected transaction requests. Carefully review all transaction information directly on your Ledger screen before signing. If these steps do not resolve the problem, contact official Ledger support for further assistance.