As part of routine upgrades to our infrastructure to improve performance and reliability and along with the announced sunsets scheduled for February 29th, we are planning to change our SSL certificates to use wildcards in the common name (CN). Our certificates will therefore be configured as CN *.google.com instead of adwords.google.com.sandbox environment, which has always used wildcards in its certificate. If your request works with the sandbox, you can rest assured that this change will not affect your production code. If you encounter host verification errors, we recommend updating your SSL libraries and retesting. As always, we encourage you to post any questions or concerns regarding this change in our forum .David Torres , AdWords API Team
