Home / Help Center / QR code won’t scan or keeps expiring

QR code won’t scan or keeps expiring

Fix problems linking a device by QR code.

Trouble linking a device? The QR code refreshes often for security.

In Devices, open the device and make sure a fresh QR code is showing (refresh if it looks stale).
On your phone: WhatsApp → Linked Devices → Link a Device, then scan.
Improve lighting, hold steady, and clean your camera lens.
Make sure both phone and computer have a stable internet connection.

If it still fails, remove the device and add it again.

Related guides