You back up the Drive:\Documents and Settings\All Users folder when the Background Intelligent Transfer Service (BITS) runs. After you back up the folder, if you open the report for the backup activity, you may notice the following error message:
Warning: Unable to open "Drive:\Documents and Settings\All Users\Application Data\Microsoft\Network\Downloader\qmgr0.dat" - skipped. Reason: The process cannot access the file because it is being used by another process.
Warning: Unable to open "Drive:\Documents and Settings\All Users\Application Data\Microsoft\Network\Downloader\qmgr1.dat" - skipped. Reason: The process cannot access the file because it is being used by another process.
Note Drive is a placeholder for the root directory that contains the system files of your computer.
BITS creates and uses the Qmgr0.dat and Qmgr1.dat files. When BITS runs, the Qmgr0.dat and Qmgr1.dat files are always locked. Because of this locked state, the backup application cannot open and back up the files. Therefore, you will notice that the file is being used by another process.
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
To resolve this problem, you do not have to back up the Qmgr0.dat and Qmgr1.dat files. You can exclude these files from backup to prevent the errors. To exclude the Qmgr0.dat and Qmgr1.dat files, follow these steps:
Log on to the computer as an administrator.
Click Start, and then click Run. The Run dialog box appears.