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How many days does C2DM take to activate the registration ? I’ve received an email indicating that it’ll take a day or so, but I keep getting an “authentication failed” when I try to register a device.
I’m absolutely sure I didn’t make any mistakes in the code, configuration or sender email.
To answer your question, from the moment you received your email it should take 1, maximum 2 days (I didn’t hear of cases in which it took longer). If more than 2 days passed, the problem is probably because of you, and not the Google servers.
Google specifically explains what
AUTHENTICATION_FAILEDmeans:Take a look here. Make sure you are using the proper credentials.
FYI, avoid saying that you are 100% positive about your code, and post meaningful code snippets, just in case.