Why does it say invalid QR code? If the Phone Link app says Invalid QR code on your mobile, it implies that the QR code is expired as you have waited too long to scan the code.

You can now link your devices and apps with your Microsoft account using the link code without requiring you to enter your account details manually.

If the Phone Link app won't generate QR code or PIN on your Windows 11/10 PC, use these effective fixes to resolve the issue.

With traditional QR codes, a separate code for each resource would be needed – cluttering print assets or forcing users to navigate long link trees. Multi-link QR codes condense this into one scan, ...