If you have already created backups of this server using Windows Server Backup, you might lose access to them if you do not ...

If you have already created backups of this server using Windows Server Backup, you might lose access to them if you do not restore the catalog first. Do you want to continue without restoring the catalog?

Click Yes if this is the first backup of this server or you do not need to access earlier backups.

Click No if you have already created backups of this server and want to restore the catalog for those backups before you continue. Then cancel this wizard, click Start, right-click Command Prompt, and then click Run as administrator. At the prompt, type the following, where  is the latest backup of the server: 
WBADMIN RESTORE CATALOG -BACKUPTARGET:.