Missing office types on sharepoint online document library after adding content type

Question

On an out of the box sharepoint online site i can find on the document library under the "New" button the most common office documents like word, excel, powerpoint and so on. but as soon a i add an additional content type to the library. I can find the the created content type, for example the picture, but only word document and the other office tyoe like excel and pp are gone. After i remove the picture content type all type of office files a showing up again.

Why is that, and how i can bring back the excel an other office types on the new button.

thanks

Answer 1

This has already been answered here: https://sharepoint.stackexchange.com/a/192058

As it turns out, these "content types" comes from Office Online Server (formerly knows as, Office WebApps Server). The only way to change them is by adding custom content types. That goes from reordering as well.

If you only have the default document content type then the new button will default to the 4 basic documents that can be created in Office Online server. If you add custom content types then the assumption is that each custom content type has a custom template associated with it. So then the New button will default to showing you the different document templates associated with each content type. This is all by design,

• Paul Stork on O365 Network