Possible causes are as follows:

• The server is not listed on the client as a valid server.

• The client was configured to require encrypted backups, but the encryption attribute for the backup policy on the server was not selected.

• The evaluation license for the NetBackup Encryption product has expired on the server, but the NetBackup client was configured to require encrypted backups. As a result, the server tries to make a non-encrypted backup of the client. Since the client is configured to require encryption, the backup failed.

• If the server is a valid server but is not listed on the client, add its name to the client's server list:

  • On Windows clients in the Specify NetBackup Machines and Policy Type dialog box, do the following: Add the server in the Server to use for backups and restores drop-down list. To display this dialog box, start the Backup, Archive, and Restore interface on the client. Then click Specify NetBackup Machines and Policy Type on the File menu.

  • On UNIX, Linux, and Macintosh clients, add a SERVER entry in the bp.conf file.

  • On NetWare target clients, add a SERVER entry in the bp.ini file.

    If you continue to have problems, more information is available:

    See "Resolving network communication problems" and "Verifying host names and services entries" in the Troubleshooting Guide.

• To make non-encrypted backups of the client, set CRYPT_OPTION on the client to allowed or denied.

  Refer to the NetBackup Encryption Administrator's Guide.

• If the NetBackup encryption evaluation license has expired on the server and you want to continue encrypting backups of the client, do the following: Purchase a permanent encryption license key and add it to the server. After you add the permanent encryption license key, check the attributes of the backup policy to make sure that encryption is selected.

  To check the validity of an evaluation license key, do the following:

  On Windows, go to the Help menu on the NetBackup Administration window on the NetBackup server and select License Keys. If the evaluation key is not listed in the NetBackup License Keys window, the key has expired. Use this window to add the new permanent encryption key.

  On UNIX and Linux, use the following command on the server: /usr/openv/netbackup/bin/admincmd/get_license_key

  Select option f to list the active license keys and features. If the evaluation key is not listed, the key has expired. Use this command to add the new permanent encryption key.