# File Sharing

Nextcloud users can share files with their Nextcloud groups and other users on the same Nextcloud server, with Nextcloud users on other Nextcloud servers, and create public shares for people who are not Nextcloud users. You have control of a number of user permissions on file shares.

Configure your sharing policy on your Admin page in the Sharing section.

- Check `Allow apps to use the Share API` to enable users to share files. If this is not checked, no users can create file shares.

- Check `Allow users to share via link` to enable creating public shares for people who are not Nextcloud users via hyperlink.

- Check `Allow public uploads` to allow anyone to upload files to public shares.

- Check `Always ask for a password` to proactively ask a user to set a password for a share link.

- Check `Enforce password protection` to force users to set a password on all public share links. This does not apply to local user and group shares.

- Check `Set default expiration date` to set a default expiration date on public shares.

- Check `Allow resharing` to enable users to re-share files shared with them.

- Check `Allow sharing with groups` to enable users to share with groups.

- Check `Restrict users to only share with users in their groups` to confine sharing within group memberships.

  > Note

  > This setting does not apply to the Federated Cloud sharing feature. If Federated Cloud Sharing is enabled, users can still share items with any users on any instances (including the one they are on) via a remote share.

- Check `Exclude groups from sharing` to prevent members of specific groups from creating any file shares in those groups. When you check this, you’ll get a dropdown list of all your groups to choose from. Members of excluded groups can still receive shares, but not create any.

- Check `Allow username autocompletion in share dialog` to enable auto-completion of Nextcloud usernames.

- Check `Show disclaimer text on the public link upload page` to set and show a disclaimer text on public links with hidden file lists.

With `Default share permissions` you are able to set the default permissions for user-shares (`Create`, `Change`, `Delete` and `Share`) without forcing them.

Note

Nextcloud does not preserve the mtime (modification time) of directories, though it does update the mtimes on files. See Wrong folder date when syncing for discussion of this.

## Transferring files to another user

You may transfer files from one user to another with `occ`. This is useful when you have to remove a user. Be sure to transfer the files before you delete the user! This transfers all files from user1 to user2, and the shares and metadata info associated with those files (shares, tags, comments, etc). Trashbin contents are not transferred:

    occ files:transfer-ownership user1 user2

(See Using the occ command for a complete `occ` reference.)

## Creating persistent file Shares

When a user is deleted, their files are also deleted. As you can imagine, this is a problem if they created file shares that need to be preserved, because these disappear as well. In Nextcloud files are tied to their owners, so whatever happens to the file owner also happens to the files.

One solution is to create persistent shares for your users. You can retain ownership of them, or you could create a special user for the purpose of establishing permanent file shares. Simply create a shared folder in the usual way, and share it with the users or groups who need to use it. Set the appropriate permissions on it, and then no matter which users come and go, the file shares will remain. Because all files added to the share, or edited in it, automatically become owned by the owner of the share regardless of who adds or edits them.

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