SSL handshake failed: Handshake Failed: An internal token was invalid This error in Free Download Manager (FDM) just means FDM failed to securely connect to the server or tracker. Try the steps below to resolve this issue. Update your FDM Old FDM versions break SSL/TLS handshakes. Fix your device time and date Wrong system time = SSL failure Right-click clock → Adjust date & time Enable Set time automatically Sync time manually once Run sfc /scannow in cmd (your windows certificate might be broken) Try changing your download source and use a different link. You can still download the same file using alternative links without any issues. If it all fails try switching to another browser or use internet download manager