Convert public channels to private channels#
Available on all plans
Cloud and self-hosted deployments
You must be a system admin or team admin to convert public channels to private channels. When a channel is converted from public to private, its history and membership are preserved. Membership in a private channel remains as invitation only. Publicly-shared files remain accessible to anyone with the link.
Note
The default channel Town Square
can’t be converted to a private channel.
To convert a public channel to a private channel, select the public channel name at the top of the center pane to access the drop-down menu, then select Convert to Private Channel.

Convert private channels to public channels#
Due to potential security concerns with sharing private channel history, only system admins can convert private channels to public channels using the System Console.
Note
The ability to convert private channels to public channels using the API or mmctl channel modify command is limited to system admins, team admins, and users with specific granular admin roles. Team admins have this permission by default, but system admins can restrict it or assign it to other roles.
Granular roles require permissions for managing User Management Channels and Groups, including
sysconsole_write_user_management_channels
andsysconsole_write_user_management_groups
. Manage permissions through the permission scheme.If Sync Group channel management is enabled, private channels can’t be converted to public channels.
Go to System Console > Channels.
Select Edit for an existing private channel. You can also filter the list of channels to private channels only.
Under Channel Management > Public channel or private channel, select Private.
Select Save.