What kind of files can be uploaded via the SocialFileAttachmentUpload widget?

Environment:

Customer Portal - Community Self Service 

Resolution:

The SocialFileAttachmentUpload widget by default allows uploading of the following file types: 

.png
.jpg
.txt
.gif
.pdf
.docx
.bmp
.doc
.csv
.xlsx
.xls

If you wish to add or remove allowable file types, an attribute will need to be added to the widget tag specifying all the allowable file types to be uploaded. For example, if you wish to allow .zip files to be uploaded, the widget tag would look like:

<rn:widget path="input/SocialFileAttachmentUpload" valid_file_extensions="png,jpg,txt,gif,pdf,docx,bmp,doc,csv,xlsx,xls,zip"/>