I created a form with the File Upload control. Our users have Visitor permissions which have been modified to allow adding new list and document library items. However, when they submit, they are receiving an "Unable to upload files." error. What are the minimum SharePoint permissions required for a user to upload a file to the form? I tried to change it to Contribute but that didn't work either.
@NMoreno If there is no formatting rule applied to your form control? If not and if your user has edit permission then you should be fine. Also please do check the file size too. If it's too big then it won't let you upload the file.