To confirm the file size limit for your account, log into Box. Click on the arrow next to your name in the upper right-hand corner and chooseAccount Settings>Account. YourMax file sizeis listed underAccount Details.
It's important to note that shared folders enforce the file size limit that applies to the Folder Owner's plan, whether or not any of the collaborators within the folder have a higher limit.
A Business account user is uploading files to a shared folder owned by a free user. The Business user will be limited to uploads that are no larger than 250MB since the folder is owned by a free user.
Size Limits in Internet Explorer
Internet Explorerapplies upload and download limits that supersede Box account-level upload limits. Users accessing Box through Internet Explorer versions 6, 7, and 8 can upload files up to 2GB in size.