Openin documents from sharepoint in office

Hi,

Recently we migrated the authentication for sharepoint 2013. After that we were unable to open the documents in browser as well as in office. After running the command New-SPWOPIBinding, documents opened in browser. But if we try to open in office, it asks for the authentication which was not the case earlier.

Does anyone know the cause for this and how can it be resolved?

Thanks,

Virender