Synchronization issue between the mobile app and Data Crow

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Synchronization issue between the mobile app and Data Crow

Forum: General discussion

Creator: Carlos Alberto Capella

Created: 2026-07-19

Updated: 2026-07-20

Carlos Alberto Capella - 2026-07-19

I can't sync the mobile app with Data Crow on my netbook. When I try to log in, I get the message: “Connection failed. Could not connect to the Data Crow server. Please scan the QR code again.” Then I try to scan the QR code found under Tools/Synchronization Service, and I get the message: “Error. Server unreachable.”

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- Robert Jan van der Waals - 2026-07-20
  
  It is very likely due to the port not being available or security software blocking the communication. Can you try a different port, 80 or 8080?
  
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