Summary
This article explains common reasons QR code scanning may fail and how to fix the issue.
Common Reasons QR Code Does Not Work
QR scan may fail if:
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Browser page is not refreshed
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WhatsApp app is outdated
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Camera permission is blocked
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Network is slow or unstable
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VPN is enabled
Quick Fix Checklist
Try the following steps in order:
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Refresh duochat page and generate new QR
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Restart WhatsApp app
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Check phone camera permissions
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Switch to Chrome or Edge browser
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Disable VPN if enabled
If Problem Still Continues
If scanning still fails:
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Log out and log back into duochat
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Restart phone
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Try connecting from another computer
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If nothing works, contact duochat support with screenshot of error.
