verification failed with simple hello world uart and given example in nrfconnect

[Bipinv2000]

please give me the solution for this issue i have uploaded simple hello world uart code with nrfconnect quick start

[Benjamin]

Hi,

Could you please share more environment details?

What DK is you working with?

Does any other version of Quick Start work?

Are you able to flash and see logs if you use the VS Code extension?

Regards,
Benjamin

[Bipinv2000]

I'm using nrf54l15 dk and using quick start 1.5.2 and logs are 2025-11-14T10:20:53.990Z INFO Initialising the bundled nrfutil device
2025-11-14T10:20:53.998Z DEBUG Started watching devices
2025-11-14T10:20:54.598Z INFO Using the bundled core version for nrfutil device: 8.1.1
2025-11-14T10:20:54.627Z INFO Using nrfutil device version: 2.13.2
2025-11-14T10:20:54.628Z INFO Using nrf-device-lib version: 0.19.0
2025-11-14T10:20:54.628Z INFO Using nrf-probe version: 0.45.0
2025-11-14T10:20:54.628Z INFO Using SEGGER J-Link version: JLink_V8.60
2025-11-14T10:21:05.116Z DEBUG Selected device: nRF54L15 DK
2025-11-14T10:21:05.166Z DEBUG Changed step: Info
2025-11-14T10:21:07.079Z DEBUG Changed step: Rename
2025-11-14T10:21:07.774Z DEBUG Changed step: Program
2025-11-14T10:21:12.091Z DEBUG Changed step: Verify
2025-11-14T10:21:15.103Z INFO Opened port with options: {"path":"COM4","baudRate":115200}
2025-11-14T10:21:18.448Z INFO Port COM4 still in use by other window(s)

[Benjamin]

Bipinv2000 said:

2025-11-14T10:21:18.448Z INFO Port COM4 still in use by other window(s)

This is the issue. The "verify step" is just reading the log from the hello world application to check that the output is as expected. The program is unable to open this COM port (where the logs are written to) because something else on your system currently is using it. Do you have any serial terminals open that might read logs from your board?

[Bipinv2000]

Hello, I have download and used it in other pc and get same issue and no serial terminals open that read logs except this .

[Benjamin]

Something else is using the COM port, that is why you see the failure. Try closing everything else and just open the Quick Start application?

Also, are you able to see logs in the VS Code extension?