Windows 10 Registry Repair Software—Fix & Clean Windows Registry

What are Windows registry and its uses?

The registry, often known as the Windows registry, is a database containing information, settings, choices, and other variables for software and devices installed on all versions of Microsoft Windows.

The registry can be accessed by the kernel, device drivers, services, Security Accounts Manager, and user interfaces. The registry also provides access to counters that may be used to profile system performance.

In other words, the registry, also known as the Windows Registry, stores information, settings, choices, and other data for applications and devices installed on all versions of Microsoft Windows. When software is installed, for example, a new subkey containing settings such as a program's location, version, and how to start the application is added to the Windows Registry.

Information about registry root keys & Windows registry values

When you initially use the Windows Registry Editor, it shows all registry values in root keys. What do they mean? What do they imply? This section provides a quick overview of the most frequent root keys and the values they contain.

▶ Root key

• HKCR (HKEY_CLASSES_ROOT): It describes file type, file extension, and OLE information.

• HKCU (HKEY_CURRENT_USER): It contains information about the individual who is presently signed in to Windows as well as their settings.

• HKLM (HKEY_LOCAL_MACHINE): It contains computer-specific information such as installed hardware, program settings, and other data. The data is utilized by all users that access the machine. This key and its subkeys are among the most frequently accessed and modified regions of the registry by users.

• HKU (HKEY_USERS): In includes information about all the users who log on to the computer, including both generic and user-specific information.

• HKEY_CURRENT_CONFIG (HKCC): The details about the current configuration of hardware attached to the computer.

▶ Windows registry values

• REG_SZ -- String value: Allows any string value, such as a file path, to be specified on a single line and is the most often seen subkey in the registry.

• REG_MULTI_SZ -- String array value: All multi-line string values.

• REG_EXPAND_SZ -- Expanded string value: It contains a string with environmental or system variables that need to be expanded. For example, c:\%windir%\example.exe could be the same as C:\windows\example.exe.

• REG_BINARY -- Binary value: Allows for attributes to be defined in binary as either on or off (0 or 1).

• REG_DWORD -- DWORD value: Similar to the binary value, but capable of values being defined in either 32-bit decimal or hex.

• REG_QWORD -- QWORD value: Like the DWORD, but stored as a 64-bit value.

Methods of Windows 10 registry repair and clean-up

Part 1. How to create a backup for your Windows registry

Editing the registry can be very straightforward to solve some problems, but it also can set some personalized things. The registry is beneficial, but this will have a specific risk. Once modified by the error may lead to system crashes that cannot run normally, then we have to back up the registry before modification. How do you back up the registry in Windows 10? Here we’ll show you how to back up your registry.

Way 1. Create a backup of a particular key in Windows 10 registry repair software

In fact, Windows 10 registry repair software is Windows registry editor itself.

Step 1. Hit “Windows” + “R” to bring up Run and type regedit. Click “OK” or hit “Enter”.

Step 2. And in the User Account Control prompt, click “Yes”.

Step 3. In Registry Editor, navigate to the key you’re about to modify. For this, you can either click through the directories on the left-hand pane to traverse the registry keys, or click on the search box at the top and enter the key path.

Step 4. You can back up all contents by clicking “File” and choosing “Export” and then saving it in a location. Or you back up a specific file by selecting the key you want to backup and clicking on the File menu and selecting “Export”.

To restore the backup, you only need to open the Registry window, and follow the same steps but click “Import”.

Way 2. Backup the Windows Registry via using System Restore

Step 1. Hit Start and search restore point. Click on the Create a restore point result.

Step 2. Before you create a restore point, you need to turn on Protection Settings for the volume you want to backup. In our case, it’s the C drive. To turn it on, select C from the list of drives under Protection Settings and hit Configure. Select the Turn on system protection option and hit OK.

Step 3. Back in the System Properties dialog box, click on Create.

Step 4. Add a description/name to this restore point and hit Create.

To restore, launch System Restore. Bring up Run, lookup rstrui, and hit OK or press Enter. Hit Next on the System Restore wizard. Select a restore point on the following screen. If you don’t see one, tick the Show more restore points checkbox to reveal all the available restore points. Then tap Next, and on the following screen click on Finish to begin restoring the selected restore point

Part 2. Clean registry in Windows 10 with PC clean tool

During the installation process, all Windows apps save data to the registry. System components use the registry to store and retrieve configuration data. The registry data changes depending on the version of Microsoft Windows and the years or months the system has been utilized. This is because as programs and applications are added and uninstalled from the system, entries are created to the registry but are seldom if ever, removed.

The register is continually growing as a result of the system's automation. It may get so enormous that the system slows down and eventually crashes, bringing everything to a standstill. This is why registry cleanup software should be used regularly.

Since it's very risky to clean the registry manually, we suggest you turn to registry cleanup software. If you still need a handy tool, here we recommend a free tool, AOMEI Partition Assistant Standard.

It is a multifunctional disk and partition management tool for Windows 11/10/8/8.1/7/XP users to conveniently and securely manage their computers. The "PC Cleaner" function of this software can scan your system, recognize unneeded data, and list them to help you safely clean the Windows registry. During the scan, junk files will filter all junk files in the system, so you can completely clean your system and disk with some clicks.

Step 1. Download and open AOMEI Partition Assistant Standard, and click "Free up" and "PC Cleaner" in turn.

Step 2. Click "Start Scan" in the new pop-up window to scan your computer for unwanted files.

Step 3. After starting the scan, please wait for a while until the progress bar is loaded.

Step 4. Unneeded data will be automatically selected, you can directly click "Clean All" to delete them. If you still have other unnecessary files, you can tick the boxes of the corresponding files.

Step 5. When you see a correct symbol displayed in the interface, you can click "Back" to leave the function.

Conclusion

Registry Editor is lovely Windows 10 registry repair software. But to clean the registry in Windows 10 or other versions, AOMEI Partition Assistant is more suitable to help you keep the registry in order. This tool will be beneficial if you don’t know how to clean the registry in Windows 10.

And suppose you upgrade to the Professional Edition. In that case, you can unlock more handy functions like cloning disk, MBR/GPT data-safe conversion, app/folder mover, extending partition size, and so on. In addition, it also has the Server Edition for Windows Server 2025/2022/2019/2016/2012(R2)/2008(R2) users to manage their devices easily.