I recently had a problem with the Google Drive API displaying my documents. We have developed a web application that is connecting to Google Drive accounts to retrieve a user's drive files, then display in an iframe the file using its embedUrl/alternateUrl.
This has worked fine for us in the past, but suddenly files other than Google Documents stopped displaying: html files, text files, doc files... even images!
The error I get is Refused to display 'https://docs.google.com/file/d/0B_JkNS6Wu4b5R2c0YlJSN0oyQUE/edit?usp=drivesdk' in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'.
I understand the error, it means that Google is preventing the display of documents outside of the Google domain, but the question is "why suddenly now", and how to circumvent it.
If someone stumbled upon the same issue and have found a solution, I'd be glad to hear.
Thank you kindly.
https://docs.google.com/file/d/0B_JkNS6Wu4b5R2c0YlJSN0oyQUE/preview?usp=drivesdk
Use preview instead of edit in the URL. It will work.