In the menu bar, click Tools > Tizen > Tizen Device Manager.
Right-click anywhere in the file explorer of the Device Manager and select Permit to install applications.
If failed to install application to device, follow the instructions:
Verify the device date and time.
If the certificate issued is before the device date and time, the application cannot be installed, as the certificate is considered invalid.
Verify whether the permit to install applications process is performed correctly.