How to reset the user/password of Jenkins on Windows?

Question

Maybe a fool question, I installed jenkins on windows by default, have set no user/password, it worked at first, no need to login. But when launch the 8080 webpage now, it hangs the login page, I've tried some normal user/password combinations, none could pass. Also searched the resolution on website, only find some about linux, no about windows, so need help. jenkins login page

Answer 1

You can try to re-set your Jenkins security:

1. Stop the Jenkins service
2. Open the config.xml with a text editor (i.e notepad++), maybe be in C:\jenkins\config.xml (could backup it also).
3. Find this <useSecurity>true</useSecurity> and change it to <useSecurity>false</useSecurity>
4. Start Jenkins service

You might create an admin user and enable security again.

Note: On more recent Jenkins versions running on Windows the config.xml file is found here: C:\Windows\System32\config\systemprofile\AppData\Local\Jenkins\.jenkins\

Answer 2

Read Initial password :

C:\Program Files(x86)\Jenkins\secrets\initialAdminPassword 

Default username is 'admin' and the password is the one from initialAdminPassword when you follow the above path.

'Manage Jenkins' --> 'Manage Users' --> Password 

Then logout and login to make sure new password works.