Regedit : l’éditeur de registre, propre à Windows (2023)

FAQs

How do I fix Windows Registry problems? ›

The real problem with the registry is that it was exposed to the outside world. Instead of being a secure, central hive for only the most essential and global settings, over time the registry has slowly become a trash heap of miscellaneous junk settings for every rinky-dink application on the planet.

Click Start, click Run, type regedit in the Open box, and then click OK. Locate and then click the subkey that holds the registry item or items that you want to change. Click File, and then click Export. This step backs up the subkey before you make any changes.

There are many reasons why a registry hive may be corrupted. Most likely, the corruption is introduced when the computer is shut down, and you cannot track the cause because the computer is unloading processes and drivers during shutdown. Sometimes, it is difficult to find the cause of registry corruption.

If no backups are available, Windows Registry Checker tries to make repairs to the registry. This is equivalent to running the scanreg /fix command from a command prompt. If the registry contains more than 500 KB of empty data blocks, Windows Registry Checker automatically optimizes it.

Windows registry disadvantages are as follows: Transferring per-program user settings between Windows machines is tedious, as the Windows registry is largely dependent on the local machine.

The error message indicating the missing registry files in Windows 10/8/7/XP provides a 3 step solution itself: Step 1: insert Windows installation disc and restart computer. Step 2: choose language settings and then click Next. Step 3: click Repair your computer.

How do I manually clean my Windows Registry? ›

Signs of Corrupt Windows Registry

The signs of a corrupt registry are mostly sudden when least expected. It is like having your PC crashes or freezes without any warning. You have error messages on your screen with some of your routine application refusing to start.

Most people never need to touch the registry, and it is easy to do more harm than good. Today, a registry cleanup is typically only necessary as a means of mitigating system or application-related problems with no other fixes.

The process of resetting Windows reinstalls the operating system, which will naturally reset the registry.

Modifying the registry improperly can result in Windows becoming corrupted. You should only attempt these directions if you have your data backed up and are willing to risk creating additional problems. You should also back up the Windows registry (see Windows - Backing Up the Registry) before attempting any changes.

How do I restore my registry settings? ›

Log in as a normal non-admin user. Open up regedit, right-click on the top level keys and examine the permissions for each, you'll see which ones you can write to as a user. Basically, it's just HKEY_CURRENT_USER as SLaks says. HKEY_LOCAL_MACHINE is off limits, for instance.

A registry tree can be 512 levels deep. You can create up to 32 levels at a time through a single registry API call. Long values (more than 2,048 bytes) should be stored in a file, and the location of the file should be stored in the registry.

Registry keys are container objects similar to folders. Registry values are non-container objects similar to files. Keys may contain values and subkeys. Keys are referenced with a syntax similar to Windows' path names, using backslashes to indicate levels of hierarchy.

By cleaning the registry, you can get rid of those unwanted entries and make your system run a little bit faster. Sometimes, however, it is really necessary to fix registry issues. For example, if you have ever encountered a piece of malware, you know that it can completely mess up your registry.

The sfc /scannow command will scan all protected system files, and replace corrupted files with a cached copy that is located in a compressed folder at %WinDir%\System32\dllcache. The %WinDir% placeholder represents the Windows operating system folder. For example, C:\Windows.

Reg.exe can be useful when you want to quickly make a change to the Windows Registry without opening registry editor and moreover and has the additional facility of being directly usable in scripts. To run the reg.exe, open cmd, type reg /? and hit Enter.

How to remove registry entries for uninstalled software manually? ›

Click Start, click Run, type regedit in the Open box, and then press ENTER. After you click the Uninstall registry key, click Export Registry File on the Registry menu. In the Export Registry File dialog box, click Desktop in the Save in box, type uninstall in the File name box, and then click Save.

Navigate your way to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall. In the left pane, with the Uninstall key expanded, right-click any item and select Delete.

In the command prompt window, type SFC /scannow and press Enter . System file checker utility checks the integrity of Windows system files and repairs them if required. After the process is complete, reboot the computer.

The BIOS can be corrupted during normal operation, through environmental conditions (such as a power surge or outage), from a failed BIOS upgrade, or damage from a virus. If the BIOS is corrupted, the system automatically attempts to restore the BIOS from a hidden partition when the computer is restarted.

In the command prompt window, type SFC /scannow and press Enter . System file checker utility checks the integrity of Windows system files and repairs them if required. After the process is complete, reboot the computer.

It is a result of some type of corruption found in the registry. If you carried out an antivirus scan and quarantined some files or programs related to Microsoft Office, you might receive this message. Most times, repairing the file is the only way to remove the registry error if this is the cause.

Do registry errors slow down computer? ›

While some registry keys are absolutely critical to make sure your PC operates correctly, in fact a lot of them are duplicates. Some of your registry keys may actually be invalid, or even corrupt. These useless registry keys can slow down your computer. Useful or not, registry keys places demands on your computer.

With Avast Cleanup, it's easy to clean your registry. Simply run a scan and Avast Cleanup will identify broken registry items, orphaned entries, invalid file type pointers, and old startup entries from third parties. Avast Cleanup safely deletes or repairs all problematic registry entries.

Any broken Windows Registry entries should be fixed, but this is dependent on whether the entries were broken in your last backup file. Once you've repaired the Windows Registry, make sure to make a further backup to ensure you can repair it in the future.

The Only Way to Fully Reset the Registry

The process of resetting Windows reinstalls the operating system, which will naturally reset the registry. To reset your Windows PC, open Settings from the Start menu or with Win + I, then go to Update & Security > Recovery and click Get Started under Reset this PC.

Most people never need to touch the registry, and it is easy to do more harm than good. Today, a registry cleanup is typically only necessary as a means of mitigating system or application-related problems with no other fixes.

How to repair Windows Update registry? ›

Essentially, a registry cleaner is a tool that scans your Windows registry for registry keys that are of no use, or potentially leftover remnants of malware that has been removed. It then gives you the option of removing this dead weight in your system.