Error downloading http://downloads.arduino.cc/packages/package_index.json

Using Arduino Installation & Troubleshooting
#1 
 Error downloading http://downloads.arduino.cc/packages/package_index.json
java.lang.RuntimeException: java.lang.Exception: Error downloading http://downloads.arduino.cc/packages/package_index.json
    at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onUpdatePressed$0(ContributionManagerUI.java:151)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.Exception: Error downloading http://downloads.arduino.cc/packages/package_index.json
    at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:131)
    at cc.arduino.contributions.packages.ContributionInstaller.download(ContributionInstaller.java:334)
    at cc.arduino.contributions.packages.ContributionInstaller.downloadIndexAndSignature(ContributionInstaller.java:309)
    at cc.arduino.contributions.packages.ContributionInstaller.updateIndex(ContributionInstaller.java:287)
    at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onUpdatePressed$0(ContributionManagerUI.java:147)
    ... 1 more
Caused by: java.io.IOException: Received invalid http status code from server: 416
    at cc.arduino.utils.network.FileDownloader.downloadFile(FileDownloader.java:194)
    at cc.arduino.utils.network.FileDownloader.download(FileDownloader.java:128)
    at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:129)
    ... 5 more

Above the error after closing the board manager. Im searching for the solution for this problems , the threads that I read is old. Anyone knows how to fix this?

#2

Although I regularly see reports of people having the "Error downloading http://downloads.arduino.cc/packages/package_index.json" problem, I actually don't remember it being coupled with "Received invalid http status code from server: 416". Error code 416 is "Range Not Satisfiable".

Does the problem still occur?

If so, can you open http://downloads.arduino.cc/packages/package_index.json in your browser on the same computer?

Typically we blame the "Error downloading http://downloads.arduino.cc/packages/package_index.json" on a firewall or other network security settings preventing the Arduino IDE from downloading the file.

#3

There may also have been some server issues yesterday.

Some other parts of the site were erratic.

#4

I would like to know the solution on this issue. I have face same issue when I want to adding board ep32, the tool fail to find the suitable board.

By the way, I assume the problem is because the error : Error downloading https://downloads.arduino.cc/packages/package_index.json

Error downloading https://downloads.arduino.cc/packages/package_index.json java.lang.RuntimeException: java.lang.Exception: Error downloading https://downloads.arduino.cc/packages/package_index.json at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onUpdatePressed$1(ContributionManagerUI.java:150) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.Exception: Error downloading https://downloads.arduino.cc/packages/package_index.json at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:139) at cc.arduino.contributions.packages.ContributionInstaller.download(ContributionInstaller.java:333) at cc.arduino.contributions.packages.ContributionInstaller.downloadIndexAndSignature(ContributionInstaller.java:307) at cc.arduino.contributions.packages.ContributionInstaller.updateIndex(ContributionInstaller.java:285) at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onUpdatePressed$1(ContributionManagerUI.java:146) ... 1 more Caused by: java.nio.file.FileSystemException: C:\Users\norazura\AppData\Local\Arduino15\package_index.json.tmp: The process cannot access the file because it is being used by another process.

at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:86) at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:97) at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:102) at sun.nio.fs.WindowsFileSystemProvider.implDelete(WindowsFileSystemProvider.java:269) at sun.nio.fs.AbstractFileSystemProvider.delete(AbstractFileSystemProvider.java:103) at java.nio.file.Files.delete(Files.java:1126) at cc.arduino.utils.network.FileDownloader.downloadFile(FileDownloader.java:156) at cc.arduino.utils.network.FileDownloader.download(FileDownloader.java:132) at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:137) ... 5 more

#5

Please try this:

  • (In the Arduino IDE) File > Preferences
  • Click the link at the line following "More preferences can be edited directly in the file". This will open the Arduino15 (or similar name depending on OS) folder.
  • Delete all files in that folder except for preferences.txt. Please be very careful when deleting things on your computer. When in doubt, back up!
  • (In the Arduino IDE) Close the Boards Manager window if it's open.
  • Tools > Board > Boards Manager
  • Wait for the downloads to finish.

Hopefully this time the download will be successful and you'll be able to install the ESP32 support.

#6