Symptoms
You backed up a private channel in Microsoft Teams. Later, you deleted the channel and want to restore it from the backup.
Restore fails with this error:
A backup agent error: 'Channel Channel id=<id> was not restored
Files folder of Channel id=<id> is not ready. Recovering of Channel's messages impossible
Cause
Files folder of a private channel is not created until the user opens the Files tab of the channel in Microsoft Teams UI.
Solution
- In Microsoft Teams, open the channel.
- Click Files.
- Click Open in SharePoint.
Now you can re-attempt recovery.