WhatsApp Web

QR codes are a bunch of black and white squares. If dust particles build up on your screen and disrupt any one of these squares, your cell phone camera won't be ...

So, clear the cache from both your WhatsApp mobile app and browser to ensure it is not a piled-up cache causing the issue. When all other fixes don't work, you should report the problem to WhatsApp via the mobile app or email as your last resort. Perhaps the issue lies with your WhatsApp account rather than the mobile app or browser. Therefore, unlinking all previously linked devices on your WhatsApp may resolve the issue. When linking to a new device, both the WhatsApp mobile app and WhatsApp Web require an active internet connection. So, make sure the internet is working on both devices and resolve any network issues if there is a problem. The cache stores temporary information to make websites and apps load faster. If WhatsApp Web is experiencing a technical issue, wait until the developers resolve it on the backend. Moreover, make sure that your mouse cursor isn't on the QR code you are trying to scan. Most of the time, dust on your computer screen or your mobile camera lens is to blame, but sometimes the issue is more serious. So, continue to implement the fixes below in that case. Hence, you can start troubleshooting by cleaning your monitor screen to ensure no large dust particles are blocking the way to scan the code properly.