try remove the group name and add access_token as a query string parameter:
http://www.yammer.com/api/v1/uploaded_files/12983399/preview/photo-1.jpg?access_token=sd9f8a08fas08df7
Вопрос
Anyone know if it's possible to get the images linked with a message, the messages json returns the image url's but they can't be downloaded.
http://www.yammer.com/[group name]/api/v1/uploaded_files/12983399/preview/photo-1.jpg
Решение
try remove the group name and add access_token as a query string parameter:
http://www.yammer.com/api/v1/uploaded_files/12983399/preview/photo-1.jpg?access_token=sd9f8a08fas08df7