What is the registry?
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.

Why do I need to clean the registry?
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?
as registered users, please run the application, click "Settings" =>"Check New" =>"Get it now", our software will be upgraded to new version atuomatically.
as free version Users, please download the latest version from: download page. please Ensure Wise Registry Cleaner has been closed, then install it.

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 its 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.

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 to 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 applications 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 are 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 many files can not be deleted. If you want to delete these files, run Wise Disk Cleaner in safe mode is recommended, and to delete these files are safe.

Why Wise Disk Cleaner show me - "xx files failed to remove"?
Some files can not be removed, because they are being used by other programs. Usually these files locate in the user's temporary folder or Windows's temporary folder. If you want to remove them, you need close all other programs first or run Wise Disk Cleaner in the safe mode.

What is "add keyword" button?
This is a very useful feature to improve security, if after you run WRC, some applications can not run, you can restore your registry by WRC and add the application's name to the exclusion list, then all entries that refer to the application will be ignored. For example: your "Thunder bird" can not work after run WRC, you can undo the cleanup by WRC, then add "Thunder bird" to the exclusion list, all entries that refer to "Thunder bird" will be ignored when you next time to run WRC.

What's "Force remove entries" option?

about "Force remove entries", it's optional. In the normal status the program no enough privileges to remove or modify them. (Some viruses and Trojan will do it, they are created some entries, and set a special privileges for this entries to protect these entries can not be removed. Sure some normal applications can do this too, such as some anti-virus software.) If the option is enabled, the program will try to upgrade privileges to remove or modify these entries. In this status, these entries will be removed or modified, unless these entries are being used.

Why Wise Disk Cleaner still can find some deleted files, though I have scrubbed the drive?

If you have scrubbed the drive, Wise Disk Cleaner still can find some deleted files names, however the content of these files has been destroyed. These files can be restored by Wise Disk Cleaner, but they will become unavailable.