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March 5, 2012

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[Google] AdWords API AuthTokenException: Login failed

When you are using Google Adwords API for retrieving clients information, you may receive AuthTokenException: Login failed error while calling multiple API calls. I got the same problem and found a way to solve it. Adwords API provides Auth Token which is valid almost for a week.So when you are calling multiple API calls for client, you can specify existing auth token in auth.ini file.