Jenkins UI Changes?

[eric....@gmail.com]

First, I'm running the latest (I believe) 2.516.1.

So I have had a weird last couple of days around Jenkins.  First, my AD integration stopped working.  I was no longer able to log in using my AD account.  Here's the error I was getting:

Sep 03 15:26:25 MyMachineName jenkins[3846820]: 2025-09-03 20:26:25.918+0000 [id=13]        WARNING        h.i.i.InstallUncaughtExceptionHandler#handleException: Caught unhandled exception with ID ccdc9e6b-5c95-46de-a5da-411f0d351776
Sep 03 15:26:25 myMachineName jenkins[3846820]: java.lang.ClassNotFoundException: org.mindrot.jbcrypt.BCrypt
Sep 03 15:26:25 MyMachineName jenkins[3846820]: Caused: java.lang.NoClassDefFoundError: org/mindrot/jbcrypt/BCrypt

So I turned off security and tried to reset the AD settings.  That didn't help, still couldn't log in.  So I turned off security again and updated the AD Plugin.  Set up the AD Integration again and was able to login.  Great!

So finally, my question.  My Jenkins portal now looks different.  Instead of having "manage jenkins" on the left side, it's on the right side with a cog.  Once I click the cog, I can drop down stuff on the left side from here forward.  It doesn't seem that these changes happened with an upgrade.  I haven't logged in for a week, but I'm pretty sure I was already on this version then.  Does anyone have any clue what's going on?  Thanks!

[Daniel Beck]

On Thu, Sep 4, 2025 at 9:54 PM eric....@gmail.com <eric....@gmail.com> wrote:

First, I'm running the latest (I believe) 2.516.1.

…

Sep 03 15:26:25 MyMachineName jenkins[3846820]: Caused: java.lang.NoClassDefFoundError: org/mindrot/jbcrypt/BCrypt

…

So finally, my question.  My Jenkins portal now looks different.  Instead of having "manage jenkins" on the left side, it's on the right side with a cog.

You can find both of these issues documented at https://www.jenkins.io/doc/upgrade-guide/2.516/ specifically:

https://www.jenkins.io/doc/upgrade-guide/2.516/#jenkins-header-redesign

https://www.jenkins.io/doc/upgrade-guide/2.516/#remove-jbcrypt-library

[eric....@gmail.com]

OK, sorry for the post.  Did some research and 2.516.1 had the UI change in it I described.  Guessing my AD Integration issue came out of that as well.  Thankfully, it all worked out in the end once I upgraded the AD Integration.

[eric....@gmail.com]

Wow, thanks db...!  Guess I should stop letting our security team blindly upgrade jenkins for me.  Going forward I'll check out the upgrade guide ahead of time...