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When Backing up DFS folders with replication turned on, backup jobs will fail. The reason for the failure is that Backup Exec is trying to backup a folder that it should not backup. The problem folder is called "DO_NOT_REMOVE_NtFrs_PreInstall_Directory"

In the Job Completion Status box the final error will be:
0xe00084af - The directory or file was not found, or could not be accessed.
In the Errors box and in the Backup Set Detail Information box the error will be similar to:
"Directory D:\folder1\DO_NOT_REMOVE_NtFrs_PreInstall_Directory was not found, or could not be accessed. None of the files or subdirectories contained within will be backed up."

There are two possible solutions to this problem.

1. If there are a few problem folders:
The "DO_NOT_REMOVE_NtFrs_PreInstall_Directory" does not need to be backed up. Backup Exec should be excluding this folder by default. If there are only a few folders reporting this error simply modify the backup job(s) and deselect all of the "DO_NOT_REMOVE_NtFrs_PreInstall_Directory" folders referenced in the error(s).

2. If there are too many folders to deselect:
A Global Exclude can be created in Backup Exec to exclude the problem folders. To create a Global Exclude in Backup Exec 10.0:
1. Open Backup Exec.
2. Click on Edit | Edit Selection List...
3. Select the default selection list called Excludes and click Edit
4. On the Excludes Properties box click on Insert
5. On the Advanced file selection screen, under the heading of File selection enter the path in the path field and click ok
6. Repeat steps 4 and 5 if more than one path is required