RegError

RegError is a command-line utility that identifies registry errors and correct entries. It can be used to find out if you have to make registry repairs with the aid of another type of application, in order to restore Windows stability.

Check the registry for errors

Although console applications are typically oriented toward experienced users, this one can be used even by those who are accustomed to graphical interfaces, thanks to the fact that it has few, simple commands.

View improperly registered entries and even correct ones

The syntax is regerror.exe [-a] [-s] [-v] [-? | -h], where -a tells the tool to display correctly registered entries (in addition to the bad ones), -s displays only a brief summary of the scanning operation (overriding all other options) while -v instructs the program to show more details, such as the number of keys and values.

Examine a summary or detailed info about scans

The -? or -h switches can be used to review the syntax. If you call the app's process by writing its file name, extension and no switches, then RegError only shows the incorrect registry entries. In brief summary mode, the program reveals the number of keys, values, errors and scan duration for each hive.
Unfortunately, there is no way to stop an ongoing scanning operation. Therefore, if you change your mind, it's necessary to exit by closing the Command Prompt window.

Registry error checker with CMD support

The registry checker worked smoothly in our tests on Windows 10, although it hasn't been updated for a pretty long time. It had minimal impact on the PC's performance and carried out scans fast.
All aspects considered, RegError offers a simple way for checking your Windows registry for errors with the help of the command-line interface. However, it's not designed to fix registry issues, so you have to resort to another tool for that.