When you use the Registry Checker (Scanreg.exe) tool to restore a backup
copy of your registry, the backup from which you want to restore your
registry may not be listed.
This behavior can occur if the Registry Checker tool is configured to
maintain more than five registry backups.
To work around this behavior, use either of the following methods:
NOTE: Because you can restore registry backups only from a command prompt,
these methods assume that you are already at a command prompt.
Configure the Registry Checker tool so that only the last five registry
backups are stored in the Windows\Sysbckup folder. To do so, follow these steps:
- At a command prompt, type the following lines, pressing ENTER after each line:
- Locate the "MaxBackupCopies=" line.
- Change the line to read as follows:
- Press ALT+F, press S (to save), press ALT+F, and then press X (to exit).
If you are attempting to restore a later registry backup than the five
listed in the Registry Checker tool, rename earlier registry backups until
the backup from which you want to restore your registry is one of the five
listed. To do so, type the following commands at a command prompt,
pressing ENTER after each command
ren rb0<nn>.cab rb0<nn>.xxx
where <nn> is a number between 00 and 99.
NOTE: The lowest numbered registry backup may not be the earliest. To
determine the earliest registry backup, check the date of the Rb<nnn>.cab
For example, the Windows\Sysbckup folder contains seven registry backups
numbered Rb000.cab - Rb006.cab, with Rb000.cab being the earliest registry
backup and Rb006.cab being the latest. To cause the Registry Checker tool
to list the five latest backups, type the following commands:
ren rb000.cab rb000.xxx
ren rb001.cab rb001.xxx
The "MaxBackupCopies=" line in the Scanreg.ini file determines the number
of registry backups maintained in the Windows\Sysbckup folder. If the
"MaxBackupCopies=" line is set to six or higher (five is the default), the
correct number of registry backups is maintained in the Windows\Sysbckup
folder, but the Registry Checker tool can only display the five earliest
For additional information about how to use the Registry Checker tool,
click Start, click Help, click the Index tab, type registry
and then double-click the "Registry Checker" topic.