Hello,
1. Latest patch:
VERITAS Backup Exec (tm) 10.0 rev. 5520 for Windows Servers Installation Files
http://support.veritas.com/docs/277181
2. New patch release check.
How to use VERITAS Update
http://support.veritas.com/docs/269674
3. Check a patch installed on Backup exec 10.0
How to verify what updates have been installed in Backup Exec 10.0
http://support.veritas.com/docs/274159
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