When you encrypt a file, only the Windows user that created the file or that set the encryption, can open it.
Eg: If the Administrator encrypted the file only the Administrator can open it.
Normally the SE backup service runs as LocalSystem, not the Administrator. That will cause the encrypted file to be skipped when trying to back it up.
As soon as you set the backup service to run as Administrator it will read and backup the file.
See Article 418 on how to change the service permissions.
Old Article ID: 120
Posted: 29 Feb, 2012 by Van Rensburg J.