Prevent people from sharing files

Prevent people from sharing files in your spaces

With Pro Pack for Control Hub, you can prevent people from sharing files in your organization's spaces:

This article explains how to manage file sharing settings in Webex spaces. These settings don’t apply to Webex Meetings. For information about file sharing settings in meetings, refer to Collaboration restrictions for Webex Meetings in Control Hub.

Scroll to Collaboration Restrictions and then:

Block file preview for:

Internal users in externally-owned spaces (both group and direct message)—Check the box if you want to prevent internal users from previewing files in the externally owned spaces.

External users in internal group spaces—Check the box if you want to prevent people from outside your organization from previewing files from spaces you own. The default is that external users may preview files.

This restriction doesn’t apply in one-to-one spaces with external users.

Any users on these client types—Check the box, then choose which client types can preview files. The default is no restrictions.

Blocking file preview for image files is not yet available (example: JPEG, JPG, PNG, and GIF).
Block file download for:

Internal users in externally-owned spaces (both group and direct message)—Check the box if you want to prevent internal users from downloading files in the externally owned spaces.

External users in internal group spaces—Check the box if you want to prevent people from outside your organization from downloading files from spaces you own. The default is that external users may download files.

This restriction doesn’t apply in one-to-one spaces with external users.

Any users on these client types—Check the box, then choose which client types can download files. The default is no restrictions.
Block file upload for:

Internal users in externally-owned spaces (both group and direct message)—Check the box if you want to prevent internal users from uploading files in externally owned spaces.

External users in internally-owned spaces—Check the box if you want to prevent people from outside your organization from uploading files to spaces you own. The default is that external users may upload files.

This restriction doesn’t apply in one-to-one spaces with external users.

Any users on these client types—Check the box, then choose which client types can upload files. The default is no restrictions.
Allow file preview, download, and upload for Whiteboards and Annotations—Disable this if you want to apply your restrictions to whiteboards and annotations. These can be shared by default.

For information on how to find out who owns the space, see Webex App space policy.

Restrict file sharing by file type

Before you begin

These controls require Pro Pack for Control Hub.

1	Sign in to Control Hub at https://admin.webex.com and open the Services > Messaging page.
2	Find File type restriction and check Allow upload and download for specific file types. (If you clear this box, then users can share all file types in spaces.)
3	Enter a comma separated list of file extensions, then click Allow. For example, enter `jpg,txt,png,doc` and click Allow. You see these file types added to the allow list that shows below the text field. Users cannot share files with extensions that are not on the allow list. You can also Clear All if you need to change the allow list. Supported file types include: .doc, .docx, .csv, .key, .ppt, .pptx, .gif, .jpeg, .jpg, .pdf, .xls, .xlsx, .mp3, .mp4, .mov, .mpg, and .wmv. Folders and .tif files aren't supported at the moment.

Prevent groups in your organization from sharing files

With Pro Pack for Control Hub, you can prevent people in specific Active Directory groups from sharing files.

Before you begin

You must be synchronizing your Active Directory groups.

Select a group from the list.

This opens the group's settings.

Configure this group's file sharing policy:

Block file preview and download on these clients types—Use the dropdown to choose which client types can preview and download files. The default is no restrictions.
Block file upload on these client types—Use the dropdown to choose which client types can upload files. The default is no restrictions.
Allow file preview, download, and upload for Whiteboards and Annotations—Enable this if you want your restrictions to also apply to whiteboard and annotations. This is on by default.

If a user is a member of multiple groups and any of these collaboration restriction settings is selected in one or more groups, then that restriction applies to the user.