IMC's not working, JSERVER stopped and don't start

[jguse]

Hello,

Can you please open Properties for the jmx.password file, and share a screenshot of the Security tab? If you are logged in with some user that is not in local Administrators group, this should show that you do not have read access to the file. Otherwise it shows all users/groups with permission to access the file.

The reason for the jmx.password issue is related to the OracleJDK to OpenJDK 11 backend migration in IMC. This resolved a long list of security issues, and one of them was related to the JMX console being accessible remotely without a password. To secure this and prevent the vulnerability, a jmx.password file must be added which has access restriced to only the local Administrators group. That's not something our developers decided, but the folks who worked on that for (Open)JDK.

See for example https://docs.oracle.com/javadb/10.10.1.2/adminguide/radminjmxenabledisable.html

[lcieplak]

There are the autorisations for administrators and users (my profile is in the administrator group)

[jguse · Accepted solution]

Hello,

Thanks for the screenshot. I see there are additional permissions in there. Please completely remove all user/group/system privileges on the file that you see on security tab, except for VDRLT622\Administrateurs, and then try starting up jserver again.

[lcieplak]

Hey,

It finally started ! It was just a problem of group of permissions...

I'd never guessed that i juste have to delete the uselesses groups will fix it

Thank you a lot for your help !

[HirnerStefan]

Hello,

I have the same problem, and all the options here already tried. Is there another way to solve the problem? In any case, I also get the error as above time when I rewrite the javaw.exe on java.exe.

"Error: Password file read access must be restricted: C:\Program Files\iMC\client\bin\..\bin\jmx.password
jdk.internal.agent.AgentConfigurationError"

Also i have correct the permissons on the jmx.password - but all this not work for me.

Thanks in advance

[jguse]

Hello,

Can you please post the same screenshot as above, showing your jmx.password "security" tab?

[MattPanton]

Hi Justin,

Same issue over here, ran the cacls command to change persission on that file, upon rebooting the server I noticed that the permissions still had another entry, this cannot be removed at all, you remove it and it comes back automatically, any further troubleshooting?

cant upload images for some reaon but the group is called ALL APPLICATION PACKAGES

Running your diag I get the following which suggests the file is still at fault "Error: Password file read access must be restricted"

Matt

[jguse]

Hello,

The jserver workaround was proposed by Engineering using cacls, hence my recommendation. However I've noticed that it cannot overwrite the permissions that are inherited. After some experiences removing the permissions, it's actually not absolutely necessary to use cacls. Here are alternative steps that should be easier to implement and account for this...

I simulate the issue on English Windows with hostname IMC by opening "lusrmgr" (Local Users and Groups), and renaming the Administrators group to "RenamedAdmins". This will trigger the issue if I install IMC afterwards.

To fix it:

1) Open Properties > Security on the IMC\client\bin\jmx.password file

2) Notice that there are probably 4 different permissions shown - click the icon to get Administrator permissions if you cannot see or edit the permissions. ALL APPLICATION PACKAGES, SYSTEM, Users and RenamedAdmins (this will be different based on the name of your local Administrators group). These are the inherited permissions that cause issues.

3) Click on Advanced, then click on Disable inheritance and select Convert inherited permissions into explicit permissions on this object (selecting the other option will remove all permissions, including your own, so don't use that). Your Advanced Security Settings should now look similar to this:

4) Remove all permissions, except the second one on the list above (the permissions for the local Administrators group, called IMC\RenamedAdmins in my case), like so:

5) Click on Apply to save it, and close the Properties. Start IMC again, and jserver process should now start up successfully.

Hope that helps.

[HirnerStefan]

Hello, I am sorry that I will contact you only now?

Here is the screenshot ....

The Group "Alle Anwendungspakete" can not be removed.

This is always newly created

Best regards, Stefan

[sylneo]

Hi,

Also in french language, the solution to only keep Administrators (Administrateurs in french) group ACL worked for me too. I only said one thing, without java, life would not be so funny...