Java Strikes Again - "Login Error: Invalid Http response"

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Oct 17th, 2013
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Just a heads up - Java 7 Update 45 has problems and breaks UCSM launching successfully.

You may see one of two errors:

Login Error: Invalid Http response

Login Error: Server returned HTTP response code: 400 for URL:  http://x.x.x.x:443/nuova

Temporary Workaround: Rollback Java 7 to Update 25 or lower.  A UCSM patch will be released eventually to address this.

Cisco Bug ID: CSCuj84421



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Overall Rating: 4.8 (9 ratings)
William Gurling Thu, 10/17/2013 - 12:18
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Just had this happen in one of our environments, idk if it was a different cause but we got around it by browsing to http:// instead of https:// to get to and launch UCSM.

Zhe Li Sun, 10/27/2013 - 07:13
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I got same problem with OSX10.9 Java7u45, and I rollback to Java1.6.0_65, and it still dosnt work.

loizosko Fri, 11/22/2013 - 19:51
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Cisco is about time to move away from Java. most of the times there is a java update some cisco application won't work.

is any Cisco developer reading these forums?

Victor Aranda Mon, 12/09/2013 - 16:36
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Happened to us too, on multiple machines. Rolling back Java did fix it.

kelmcilroy Tue, 12/10/2013 - 17:02
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Does this imply that a patch for 2.1. is forthcoming?  This is affecting our 2.1(3a) environment as well.

Robert Burns Wed, 11/19/2014 - 12:22
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Yes, developers read these forums.  UCSM 3.x will be HTML5 based.  Java is on the way out.



Manuel Velasco Tue, 12/10/2013 - 16:01
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Hi All,

Just wanted to let you know that there is an new patch for the 2.0 release that includes the fix to the java issue.

CSCuj84421: Java 7 Update 45 breaks UCS Manager GUI

The Patch version is 2.0(5f)

Cisco Download page

Release notes for UCS 2.0

deepakjprabhu Tue, 12/10/2013 - 19:39
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Has anyone tried "thinapp'ing" the UCS manager + matching Java version? I manage multiple clients with different UCS versions ( 1.4, 2.0 , 2.1)and switching between Java 6 & 7 is a hassle.

Ignacio Orozco Thu, 12/12/2013 - 22:10
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This workaround is not secure as everything will be sent in clear text.  This will extend threat surface of your UCS environment to anyone or anything on your network.

loizosko Thu, 12/12/2013 - 22:17
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also there is a ucs update that addresses the issue.

it was just released

if your packet will be sniffed inside your network then you have bigger issues to worry.

till the upgrade, the workarround works fine.

till next java release and here we go again.

tbrzywcz Fri, 12/13/2013 - 03:36
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number of my customers reporting same problem, Java 7 update 45 seems to be "unlucky" build. You can solve the problem by uninstalling update 45 and installing java 7 update 25.



Keny Perez Fri, 12/13/2013 - 06:44
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UCSM 2.2 was released yesterday and it addresses the issue.


Boudewijn Plomp Sat, 12/14/2013 - 04:11
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Just started updating from 2.1(3a) to 2.2(1b). Java Update 47 is now supported. But run into big issues after updating the first Fabric Interconnect! created a support case 5 minutes ago.

EDIT: Problem solved (work-around). I know it is off-topic, but worth to share. If you have configure another line-rate setting in your QoS policies you might run into numerous failures when you update you first FI to 2.2(1b). Once I set my the QoS policies settings back to 'line-rate' everthing started working again. This is just a quick reminder for those who want to get rid of the Java incompatibility and start updating.

james21970 Wed, 01/15/2014 - 10:40
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We are running 2.1.1f in 4 seperate domains, and can successfully log into them with 7 U45, but have noticed that if the http is redirected to https, the login will fail. You can change this under Admin (filter All) communication management > comminication services from witin the GUI, or at the CLI under scope system > scope services disable http-redirect

Joshua Henry Thu, 02/20/2014 - 13:28
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uninstalling java 1.7 entirely fixed this issue for me, but i agree, Cisco needs to stop using Java for their interfaces. you can get the same level of dynamics in a console that uses no java at all, just look at F5.

Patrick Devine Wed, 11/19/2014 - 12:20
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So the UCS system I am trying to connect to is on 2.1(3a) and I am running Java 8.20 and receive this message:


Login Error: Server returned HHTP response code:
400 for URL:


Do you have to reboot UCS to recover?


What is the newest Java version that UCSM will work with?


.....and please hurry up and get the HTML5 version out!

Patrick Devine Thu, 11/20/2014 - 08:05
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Thnx Kenny.....I went to the 7U25 version mentioned below and was able to access the is painful to have change versions depending on which Cisco application you are trying to access.....Can't wait for them to get rid of Java for UCSM.

Keny Perez Thu, 11/20/2014 - 08:32
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Yes, Robert just mentioned that    :)  


"Yes, developers read these forums.  UCSM 3.x will be HTML5 based.  Java is on the way out.





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