• The Registry is the central hierarchical database used in Microsoft Windows operating systems to store information necessary to configure the system for one or more users, applications and hardware devices.

• When you install an application, new registry entries will be created. These entries should automatically be deleted when you uninstall the application. Unfortunately, it does not always work that way. Sometimes, you will find that some applications fail to remove their own registry entries. These entries then become obsolete. Over time, the Windows Registry begins to hold data that are invalid and obsolete. This invalid data eventually accumulates in the Registry, slowing Windows down, compromising PC performance and causing other problems. So, to keep your computer in top performance, it is recommended that you periodically clean your Windows registry.

Why choose Wise Registry Cleaner and Disk Cleaner?

• Fast: using a high performance engine, Wise Registry Cleaner quickly scans your registry to find obsolete entries. Wise Disk cleaner quickly scans your disk to find junk files.
• Accurate: using complex algorithms Wise Registry Cleaner accurately identifies obsolete entries.
• Secure: Wise Registry Cleaner automatically creates backup files before deleting obsolete entries from your registry. Wise Disk Cleaner provides two cleaning methods: "Delete To Recycle Bin" and "Permanently Delete".
• Ease of use: Wise Registry Cleaner and Wise Disk Cleaner come with a user friendly interface. Even the least experienced user can easily use them.

How do I update my Wise Registry Cleaner and Wise Disk Cleaner?

• You can click "Download Latest Version" from the help menu or click here to view and download the latest version of Wise Registry Cleaner or Wise Disk Cleaner.

Will Wise Registry Cleaner backup my registry before I click the Fix button?

• When you click the "fix" button, a backup file will be created automatically and fast. Then when you click the "Undo Fix" button, a restore point will show. (This process is fast because it only backs up those registry entries that will be changed.)

When I click the Backup button, why does it take so long to backup the registry?

• When you click the "backup" button, a full backup file of registry will be created. Because this is a backup your entire registry, it will be slow.

When I click the "Backup" button, the top bar shows three registry keys being backed up. The lower bar reads 'Compressing...' What does 'Compressing...' mean?

• Because the backup file is so large, when the backup is completed, it needs to be compressed to reduce it's size and therefore use less disk space.

How do I use language packs ?

• Go here to download your language pack and put it in <your install folder>\Language\, close WRC or WDC, run them again, go to Menu: "Option" - "Language" and choose your language.

Do I have to uninstall an older version before installing a newer version?

• A minor upgrade can directly install the new version (for example: 2.0-2.x). A major upgrade needs to uninstall the old version first, then install the new version (for example: 2.x-3.x).

How can I identify the default Charset of my mother tongue when I translate WRC and WDC?

• If you not know the Default Charset of your mother tongue, please visit http://www.wisecleaner.com/language.html, download the translator and run it. The Default Charset of your mother tongue will display in "Charset" edit box.

Why doesn't Wise Registry cleaner check all empty registry keys?

• Because some empty keys are useful and necessary. Windows or other application need these keys. For example, under the HKEY_CLASSES_ROOT most of the empty keys are useful. If you remove these empty keys, some files could not be opened. So, Wise Registry Cleaner just checks part of registry for empty keys.

How can I get Wise Registry Cleaner 3 Pro / Wise Disk Cleaner 3 Pro for free?

• Have two ways can get Wise Registry Cleaner 3 Pro / Wise Disk Cleaner 3 Pro for free. Click here read more.

Can I remove Windows update's uninstall files safely?

• Yes, because normally we do not need to uninstall a Windows Update patch.

Can I remove Windows update source files safely?

• Yes, this is safe, but you need make sure all patches have already been installed before you do this.

How to add files or entries to the exclusion list?

• Start a scan, and when the files that you want add to the exclusion list are displayed in the table, right-click the file and choose "Add to the Exclusion List". In the Wise Disk Cleaner 3, you can add files / folders or types in the exclusion list at options dialog.

What are "not fully safe to delete" entries? Can I remove them?

• This means that these entries appear to be invalid entries. However, some application may still use these entries. So, to remove these entries may not be 100% safe. Usually you can delete all entries, including those marked as unsafe entries. It's about 90% certain that doing this is secure. (I always fix all problems.:-) ). It is important to know that even if your PC has a problem after you remove all entries, you can still very easily restore your registry with WRC.

Why I have added "c:\windows" in the exclusion list, but Wise Disk Cleaner still removed some files from c:\windows?

• Here are three options refers to c:\windows - 1. Remove Windows Updates's uninstall files when I click 'Delete'. 2. Remove Windows Update source files. 3. Clean Windows temp folder. If you have checked these option, the files that locate in these folders will be list in the result table and will be removed when you click 'Delete'. Though c:\windows in the exclusion list. (PS: You can find these options at options window.)

Why I get this error message: exception processing message 0x0000013 Parameters...?

• If you get this error message when you start a scan, please unchecked "Delete invalid shortcuts" at the options window.

Why the same files always list in the result table each time?

• Some files can not be deleted, because these files in used and usually these files are  located in the temporary folder of Windows or user's temporary folder. When clean done Wise Disk Cleaner will tell you how much files can not be deleted. If you want delete these files, run Wise Disk Cleaner in safe mode is recommended, and to delete these files are safe.