Unable to login to Jenkins even if I enter valid credentials

Question

Error: Invalid login information. Please try again.

Answer 1

Disable security by editing these two classes within the config.xml file in the following way:

authorizationStrategy class="hudson.security.AuthorizationStrategy$Unsecured"/>
  <securityRealm class="hudson.security.SecurityRealm$None"/>

Comments

Worked like a champ , thank you very much

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Glad to help :)

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When I am trying to edit the xml file it shows this error what should i do? PLease provide solution with details Its request I have a lot workload . How I can give permisssion And How to allow changes in config.xml?

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Just try with administrator access. It will work.

Answer 2

This error occurs often, even when the credentials we enter are correct. A quick fix is to reconfigure security options in the config.xml file. The Jenkins config.xml file holds all the information related to the security realm and the authorization strategy. This file is located in the /var/lib/jenkins directory. One thing you must know is that, by disabling the security any anonymous user can access your Jenkins.

Answer 3

By default, the security is enabled and if for some reason you’re not able to login to Jenkins dispite providing valid credentials then you can disable the security and authorization strategy. You can do this by editing the config.xml file and changing the following two classes

• Security realm
• Authorization strategy

Answer 4

You can change the password by manually editing the configuration file for your user. (/jenkins/users/username/config.xml) and update the contents of passwordHash:

<passwordHash>#jbcrypt:$2a$10$razd3L1aXndFfBNHO95aj.IVrFydsxkcQCcLmujmFQzll3hcUrY7S</passwordHash>

Answer 5

Weird but uninstalling and reinstalling worked for me! It's a lot of work and not the best thing to do.

Comments

Tried using the initial password..(lengthy one!)... its worked..

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How do I get the initial password?

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• You can find your password for  Username=admin. Password should be located in: $JENKINS_HOME/secrets/initialAdminPassword.
• You can view the password using: cat /var/lib/jenkins/secrets/initialAdminPassword.
• cat $JENKINS_HOME/secrets/initialAdminPassword

Answer 6

If everything is right then showing error in sing up please try this
Open cmd
Change port by type:-
 java -jar jenkins.war --httpPort=(any port no) and run
Open browser by using localhost:portno./
It will open again as you wish
Remember that you have to change port no 8080 to any no.