install SharePoint2013 Server 2013 in your native language – in my case English.
Configure SharePoint for building Access Apps (http://social.technet.microsoft.com/wiki/contents/articles/12514.sharepoint-2013-access-services.aspx)
Create a new Access App, test it as working
Install a language pack (you should have done this first by the way – not after you had started using SharePoint but we do occasionally consume/partner with other companies and face this stuff).
Created a second Access App and you will find it fails to initiate correctly even although the first app works fine still.
So, SharePoint initially creates a web for the Access-App with the initial locale of your native install whihc in this case is “en-US”...Read More