Why my SEGGER Embedded Studio indicates that "Unrecoverable failure"?

[SeanOY]

It seems that my SES is unregistered or uncertificated? How to fix it, I think this software is free for use. 

[Einar Thorsrud]

Hi,

You can obtain a SES license for Nordic devices here. Then go to Tools -> License Manager... to activate SES.

Br,

Einar

[SeanOY]

I've viewed other questions same as mine, the solution is to update the software.