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mainclass ?jar not found , java.lang.ClassNotFoundException at installation of openkm7.0 on windows

PostPosted:Wed Feb 25, 2026 7:19 pm
by Pitt
Hello,
thank you for the new 7.0 CE !!!
I tried to install it with the okminstaller on windows. First, I installed the openjkd 11.0.30.
Then, if I started the okminstaller (java -jar okminstaller.jar), the installation stopped with the message "mainclass ?jar not found" , "java.lang.ClassNotFoundException".
I tried the installer with the openjkd version 25 too, but with the same error.

Thanks for your help!
Greetings!
Pitt

Re: mainclass ?jar not found , java.lang.ClassNotFoundException at installation of openkm7.0 on windows

PostPosted:Thu Feb 26, 2026 8:53 am
by jllort
* You should use openjdk 11 ( I suggest downloading from https://learn.microsoft.com/en-us/java/openjdk/download )
* The jar file is named OKMInstaller.jar you should use the exact command line:
Code: Select all
java -jar OKMInstaller.jar
I have tested in a windows and for me it worked

¿What is the md5sum of the file?

Re: mainclass ?jar not found , java.lang.ClassNotFoundException at installation of openkm7.0 on windows

PostPosted:Wed Mar 04, 2026 8:10 am
by Pitt
Thank you! Thats it.