A number of Google Apps customers are experiencing problems accessing Google Adsense or Doubleclick services after their accounts have been migrated or transitioned to the new Google Apps infrastructure.  This problem leaves users with no place to turn and no resolution in sight with disturbing messages like:

Unauthorized Access
We apologize for the inconvenience, but you are not authorized to visit this page. If you believe this is an error, please contact your account manager.

and

Error: This Google account isn’t enabled for AdSense. Please sign up for an AdSense account.

If you are a Doubleclick for Publishers or Doubleclick for Small Business customer, this can be both frustrating and scary, since it tells you to contact yourself. “What happened to my account?” you may ask.  Searching the Google Support forum or contacting Doubleclick through their various contact forms yields no results, but don’t panic! we have a solution that might just get you back up and running again!

The problem seems to stem from the temporary accounts that were created during the transition failing to migrate, even after you get the message that the domain’s transition is complete and all conflicting accounts have been resolved.

While there is no definitive solution at this point, your best shot is to use the Google account recovery page and enter your temporary email address. This address is setup as username%domain.tld@gtempaccount.com, so for example if your email before was bob@corporation.net you would enter bob%corporation.net@gtempaccount.com. When prompted claim that you can in fact receive email at that address. You should in now receive a reset password to your normal email address which you can use with the @gtempaccount.com login to access adsense and doubleclick. This new password should not affect your Google Apps password at all. Once you are logged in to Doubleclick, you should be able to add your original email address back into the system.

Good luck, and let me know how it goes!