Extract messages.db with Interop and App Data Manage Tool
If your Lumia is on Windows 10 higher than 1703, you can follow the Interop procedure below.
- Install 8 Zip from Microsoft Store
- Install Interop Tools to unlock Lumia
- Create WhatsApp backup with App Data Manage Tool
- Extract messages from WhatsApp backup
If App Data Manage Tool crashes or the created backup is empty (0kb), kindly try a factory reset of the Lumia. If still not working, you can try the older procedure without App Data Manage Tool