Android SDK in Eclipse gives error about expired certificate
This question already has an answer here:
To fix this problem, simply delete the debug.keystore file.
The default storage location for AVDs is
~/.android/
on OS X and Linux. C:Documents and Settings<user>.android
on Windows XP C:Users<user>.android
on Windows Vista and Windows 7. Also see this link, which can be helpful.
Use the keytool utility to create a new debug keystore. The keystore that you are using has expired and that is the reason why you see the project shows up in eclipse with errors.
check this out http://www.androiddevelopment.org/tag/keytool/
Also before doing that delete the existing debug keystore from the location in Windows or Linux based on the OS you are using.
Try this solution:
go to folder C:Users(your pc name).android
delete debug.keystore
file and then clean and run