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Old 14.02.2024, 14:57
firmmax007 firmmax007 is offline
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Default Problem starting the program ClassNotFoundException

Problem starting the program.
After turning on the PC I can’t start jd. An error

java.lang.ClassNotFoundException: org.jdownloader.update.launcher.JDLauncher
at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:80)
at com.exe4j.runtime.WinLauncher.main(WinLauncher.java:94)
at com.install4j.runtime.launcher.WinLauncher.main(WinLauncher.java:25)


Instructions on how to fix the problem. Link not working
https://support.jdownloader.org/Know...r-installation

Server Maintenance, Ticket system will be back soon

Last edited by firmmax007; 14.02.2024 at 15:20.
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Old 14.02.2024, 15:39
pspzockerscene's Avatar
pspzockerscene pspzockerscene is offline
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Default

The internet archive/wayback machine can be used to access our support articles as long as the server maintenance of our ticket system is ongoing.*
Link to this particular support article inside Internet Archive:
pastebin.com/raw/CUDpE1Ta

* Images may be missing in that view but the articles should be readable.
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Erste Schritte & Tutorials || JDownloader 2 Setup Download
Spoiler:

A users' JD crashes and the first thing to ask is:
Quote:
Originally Posted by Jiaz View Post
Do you have Nero installed?

Last edited by pspzockerscene; 15.02.2024 at 12:38. Reason: Added *
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  #3  
Old 14.02.2024, 17:12
firmmax007 firmmax007 is offline
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Did not help. I did it according to the instructions. The error occurs on startup.
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Old 14.02.2024, 17:18
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Jiaz Jiaz is offline
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Quote:
Originally Posted by firmmax007 View Post
Did not help. I did it according to the instructions.
And what exactly did you did?
You did
1.) remove/delete the tmp and update folder
2.) Download JDownloader.jar and place it in your JDownloader folder
start it and yet exactly this error shows up?
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Old 14.02.2024, 17:53
firmmax007 firmmax007 is offline
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1. Files: Core.jar Folders: tmp, update - Deleted
2. file JDownloader.jar is located in the folder directory. What to do with him?

file JDownloader.jar was in the folder. Didn't touch him. Cannot start JD.

UPD:
Launch successful.
The problem was solved and then by accident. The instructions are written incorrectly.
The JDownloader.jar file has been replaced. Lies in this place.
c:\user\AppData\Local\JDownloader 2.0\.install4j\user\

Launch successful. The topic can be closed.

Last edited by firmmax007; 14.02.2024 at 18:42.
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  #6  
Old 14.02.2024, 19:12
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Jiaz Jiaz is offline
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Quote:
Originally Posted by firmmax007 View Post
The JDownloader.jar file has been replaced. Lies in this place.
c:\user\AppData\Local\JDownloader 2.0\.install4j\user\
Launch successful. The topic can be closed.
Do not touch the file in that place as it's only required for uninstallation. If you change that with newer JDownloader.jar, uninstaller might no longer run correctly/at all.

JDownloader.jar might have been in that folder but broken, so delete it and replace by fresh copy. We will update the article to always replace JDownloader.jar to make sure that broken files are not causing an issue

Quote:
Originally Posted by firmmax007 View Post
Launch successful..
That's great to hear!
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Last edited by Jiaz; 14.02.2024 at 19:18.
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