How to make a machine trust a self-signed Java application

Question

I m deploying an application using JAWS  and it worked until late 2013 when I got a warning  and then this morning Java completely blocked it  The message in French is   Application bloqu  e par les param  tres de s  curit   Vos param  tres de s  curit   ont bloqu   l ex  cution d une application auto-sign  e avec une version obsolete ou arriv  e    expiration de Java   which would translate roughly as   Application blocked by the security settings Your security settings have blocked from running an application that has been self-signed with an obsolete or outdated Java   The grammar is not that clear  the end of the sentence could be read as either       blocked a self-signed application from running with an obsolete or outdated Java  runtime   meaning that the local runtime is too old  but the self-signature is fine    blocked an application that has been self-signed with an obsolete or outdated Java  compiler   meaning that the Java compiler used is too old   I searched online for the exact same message in English  but I couldn t find it  So the grammar is still unclear  Note that on the message there is no Name  xyz   From  http   url   there s only the text I typed above  and a blue  i  icon   Now  I don t really understand the exact meaning of this error message  but I know that there is an issue because my JAR files are all self-signed  I have already faced this on other Windows clients  and it was easy    I extracted a  cer certificate from my keystore  Downloaded it on the client machine  open it  Made the customers install it as a trusted source on their local machine    It worked like a charm on my test setup and for one customer  but another one still has the issue and cannot run my software   This is a big issue from me  and I don t know what to do  Should I upgrade my Java compiler  recompile everything  sign every JAR file again and cross fingers  How can I make that Windows box trust my certificate and let the Java application run

User · Answer

I was having the same issue   So I went to the Java options through Control Panel   Copied the web address that I was having an issue with to the exceptions and it was fixed

User · Answer

Just Go To  Startmenu   Java   Configure Java    Security    Edit site list    copy and paste your Link with problem    OK Problem fixed

User · Answer

I had the same problem  but i solved it from Java Control Panel-- Security-- SecurityLevel MEDIUM  Just so  no Manage certificates  imports  exports etc

User · Answer

SERIOUS DISCLAIMER  This solution has a serious security flaw  Please use at your own risk  Have a look at the comments on this post  and look at all the answers to this question     OK  I had to go to the customer premises and found a solution  I    Exported the keystore that holds the signing keys in PKCS  12 format Opened control panel Java -  Security tab Clicked Manage certificates Imported this new keystore as a secure site CA   Then I opened the JAWS application without any warning  This is a little bit cumbersome  but much cheaper than buying a signed certificate

[java] How to make a machine trust a self-signed Java application

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