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UlteoJavaBug » History » Version 5

Cherian Mathew, 11/12/2012 11:19 AM

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# [[UlteoJavaBug]]
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The current version (v2.5.1) of the Ulteo OVD server in use at [cdmeditor](http://cdmeditor.bgbm.fu-berlin.de/sessionmanager) does not seem to function correctly when accessed via browsers installed with Java plugins 1.7.xx. 
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The reason for the error seems to be a check in the Ulteo OVD server version v2.5.1, which rejects any Java JVM or Plugin which does not originate from the vendors 'Apple' or 'Sun Microsystems'.
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Falling back to earlier versions of the Java plugin may solve the problem, but this is not recommended due to a major security bug fix as described [here](http://blog.mozilla.org/security/2012/08/28/protecting-users-against-java-security-vulnerability/.)
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## Symptoms
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Symptoms of this problem could be, 
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 - an error message "err01 no java" instead of the "Log In" button.
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 - a java security error after the user has logged in succesfully logged in
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 - a blank white screen with no information after the user has logged in succesfully logged in
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## Workaround
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Initial tests have shown that this problem exists on Firefox, Internet Explorer and Chrome (other browsers have not yet been tested). 
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Possible workarounds for the various browsers are described below,
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### Firefox
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A possible workaround is to 'reset Firefox' as described here [here](http://support.mozilla.org/en-US/kb/reset-firefox-easily-fix-most-problems.) Please note that even though Firefox mentions that it saves the bookmarks, it would be safe to back them up in any case. 
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It may happen that you still see the "err01 no java" symptom after the reset, but hitting the 'Enter' key should log you in.
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### Internet Explorer
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No workaround yet.
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### Chrome
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No workaround yet. 
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