After migrating mailboxes I was excited to try the new apps like Bing Maps and Action Items, however they are failing. From the event viewer I can see that they try to connect and fail. App navigation error The Error code is HTTP_STATUS_NOT_FOUND (404) P1: Apps for Office P2: 15.0.4481.1003 P3: 0x194 P4: App Error A problem occurred while trying to reach this app. P1: Apps for Office P2: 15.0.4481.1003 P3: 0x194 P4: Is there something specific that needs to be configured in Exchange to allow this? Thank you, -Patch Patch Charron | IT Director | Kensington Church

Hi Please try 1. Try a Build | Clean of the project and try again 2. Try a new project to see if the problem is related to your project or to the tools in general. http://social.msdn.microsoft.com/Forums/de-DE/appsforoffice/thread/f340eb15-93ba-4a9c-a4bd-904aea2a4c08 Cheers If you have any feedback on our support, please click here Zi Feng TechNet Community Support

Hello Zi, I am not trying to build a new app, this issue is with the built in apps that come with Exchange 2013 / Outlook 2013.

Hi After researching, I found it should be asked on Build apps for Office and SharePointDeveloping Apps for Office 2013forum http://social.msdn.microsoft.com/Forums/en-US/appsforoffice/threads And I found a helpful thread there http://social.msdn.microsoft.com/Forums/en-US/appsforoffice/thread/dcf9c87b-eefe-4470-bbdd-eca51867822d/ Close & reopen the document (and Word or Excel etc) and try again, this will resolve most issues with the client.If the problem recurs then check your Internet Explorer Internet Zone settings have you made them stronger (or weaker?), reset to the defaults and try again. If you have another computer does the problem also happen there? Again this will help identify issues with your computer configuration. If the problem persists you may need to dig deeper with a tool like Fiddler, generally we would expect that only Developer and/or Tech Support staff would do this. Hope the troubleshooting steps are helpful Cheers If you have any feedback on our support, please click here Zi Feng TechNet Community Support