Here's something you don't really want to see....ever

We ran into a unique error in Project Server 2013 a couple days ago.  In short, what we found was if you are running a Bulk Update of all Project sites, there's a possibility of putting locks on your database if you are running an instance of Project Server that is highly customized.

The error we were seeing in the SharePoint logs was this:  PWA:{PWA Url}, ServiceApp:Project Services Application, User:PROJECTSERVER\system, PSI: User {User Account} could not be authenticated because logon permission has not been granted.

In our case, the stored procedure for  pub.MSP_AUTH_AuthenticateUserByAccount could not fire, not because of an access or authentication issue, but because a lock had been placed on the tempdb's log file.  

In searching for the error, I saw something I've never seen before on Google.

Behold

You know you're having a bad day when even Google only has one idea.