How to fix a broken JDownloader installation

How to fix a broken JDownloader installation

This tutorial will not fix e.g. the following issues:

• Plugin related issues (e.g. trouble downloading from a specific website or adding an account)
• Issues with your download speed

This tutorial can fix the following issues:

• Old JDownloader installation which fails to update
• FFmpeg installation inside JDownloader keeps failing over and over
• JDownloader fails to start
• JDownloader displays error Synthetica License Warning

Instructions

1. Optional: Backup your accounts/downloadlist/settings
2. Close JDownloader.
3. Delete these files/folders in your JD installation directory:
   Files: Core.jar, JDownloader.jar
   Folders: tmp, update
4. Download the new JDownloader.jar file from here -> Choose other -> Download it and copy it in your existing JDownloader installation directory.
   Overwrite older files if your OS is asking you.
5. Restart JDownloader and install all updates.
   If JDownloader still fails to start now, please contact our support!