Arduino ESP8266 unable download

Using Arduino IDE 1.x
1 
Error downloading http://arduino.esp8266.com/stable/package_esp8266com_index.json
 package_index.json file signature verification failed
java.lang.RuntimeException: cc.arduino.contributions.SignatureVerificationFailedException: package_index.json file signature verification failed
	at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onUpdatePressed$1(ContributionManagerUI.java:150)
	at java.lang.Thread.run(Thread.java:748)
Caused by: cc.arduino.contributions.SignatureVerificationFailedException: package_index.json file signature verification failed
	at cc.arduino.contributions.packages.ContributionsIndexer.parseIndex(ContributionsIndexer.java:91)
	at processing.app.BaseNoGui.initPackages(BaseNoGui.java:484)
	at processing.app.Base$9.onIndexesUpdated(Base.java:1381)
	at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onUpdatePressed$1(ContributionManagerUI.java:148)
	... 1 more

it says ndex.json file signature verification failed any one face same problem?

2

Please do this:

  • In the Arduino IDE, click the link on the line following File > Preferences > More preferences can be edited directly in the file. This will open the Arduino15 (or similar name depending on OS) folder.
  • From that folder, delete all files other than preferences.txt. Don't delete the subfolders. Please be very careful when deleting files from your computer. When in doubt, back up!

Hopefully that will solve the signature verification problem.

3

pert:
Please do this:

  • In the Arduino IDE, click the link on the line following File > Preferences > More preferences can be edited directly in the file. This will open the Arduino15 (or similar name depending on OS) folder.
  • From that folder, delete all files other than preferences.txt. Don't delete the subfolders. Please be very careful when deleting files from your computer. When in doubt, back up!

Hopefully that will solve the signature verification problem.

its works thank you peter!

4

You're welcome. I'm glad to hear it's working now. Enjoy!
Per