YAMMER IS CURRENTLY FACING ISSUES WITH FILE UPLOADS OF A CERTAIN TYPE.
CURRENTLY AFFECTED FILE TYPES INCLUDE, BUT NOT LIMITED TO WORD DOCUMENTS (.docx) AND PDFs
[ANY FILE WHICH PREVIEWS IN YAMMER IS AFFECTED]
Users receive a HTTP ERROR on upload.
Our On-call engineers are currently investigating this and are working to bring about a speedy resolution.
Thank you for your patience while we deal with this.