Hello,
We suggest you to deselect the files that are skipped during backup since these files are open and in use continuously.
Backup Exec tries to backup these files by trying to acquire a lock on the open file.
If the file is in use continuously, Backup Exec skips the files so that it can continue backing up the remaining files.
To successfully backup open files except large database files, we recommend you to use the Backup Exec Advanced Open File Option.
There is no need to backup WINDOWS folder as this data can be backed up through system state. Hence we suggest you to run a separate backup job for system state and observe the result.
Thank You,
Shweta