Forum Discussion
How to open unknown file types without download in Sharepoint?
In my case client has some not well-known files uploaded to Sharepoint Online document library. File extension is *.bdoc (its Estonian digitally signed document format). The problem itself is - w...
One option is to create a custom file handler which handles your format. See https://msdn.microsoft.com/en-us/office/office365/howto/using-cross-suite-apps for more info.