How to "Unlock Jenkins"?

Question

I am installing Jenkins 2 on windows,after installing,a page is opened,URL is:
http://localhost:8080/login?from=%2F

content of the page is like this:

Question:
How to "Unlock Jenkins"?

PS:I have looked for the answer in documentation and google.

Answer 1

Starting from version 2.0 of Jenkins you may use

-Djenkins.install.runSetupWizard=false 

to prevent this screen.

Accroding to documentation

jenkins.install.runSetupWizard - Set to false to skip install wizard. Note that this leaves Jenkins unsecured by default. Development-mode only: Set to true to not skip showing the setup wizard during Jenkins development.

More details about Jenkins properties can be found on this Jenkins Wiki page.