My credit cards authorizations suddenly started failing, which I thought might be the result of me not upgrading - I had version 1.6.1. On upgrading to the latest stable version my admin backend is not accessible, all the site shows is Service Temporarily Unavailable.

I have a backup of the complete site so I can start over, and I do have ssh access now. I'd like to know the best place to start troubleshooting this type of error on upgrade. Any other answers on how to fix my problem appreciated.

  • check server errors (apache or nginx error logs)
    – Alex Dinca
    Commented Jan 27, 2015 at 17:58

1 Answer 1


Delete maintenance.flag from your web root.


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