Registry Tips

Source : http://www.easydesksoftware.com/regtrick.htm

Backup / Restore the Registry

To Backup/Restore the Windows Registry: Windows 9x For XP 2000 click here

1. If you are in MSDOS, at the C:\Windows prompt type
2. Attrib -s -r -h C:\Windows\System.dat (press Enter)
3. Attrib -s -r -h C:\Windows\User.dat (press Enter)

To make the backup copies type:

1. copy C:\Windows\System.dat C:\Windows\System.000 (press Enter)
2. copy C:\Windows\User.dat C:\Windows\user.000 (press Enter)

To Restore the Registry

1. copy C:\Windows\System.000 C:\Windows\System.dat (press Enter)
2. copy C:\Windows\User.000 C:\Windows\user.dat (press Enter)

Restrict Users from Running Specific Windows Programs

1/ By Group Policy
- Prevent by name
- Prevent by Hash

2/ By Registry:

1. Click Start, and then click Run.
2. In the Open box, type regedit, and then click OK.
3. Create a DWORD value named DisallowRun. To do so:
   1. Locate and then click the following registry key:
      HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion \Policies\Explorer
   2. On the Edit menu, point to New, and then click DWORD Value.
   3. Type disallowrun, and then press ENTER.
   4. Double-click the DisallowRun value that you created in the previous step.
   5. Type 1 in the Value data box, and then click OK.
4. Create a new HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion \Policies\Explorer\DisallowRun subkey. To do so:
   1. Right-click the following registry key, point to New, and then click Key:
      HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion \Policies\Explorer
   2. Type disallowrun, and then press ENTER.
5. For each program that you want to prevent users from running, create a new string value in the DisallowRun subkey that you created in step 4. Use consecutive numbers to name the string values (starting with 1), and use the executable file name for the program as the data for the string value.
   
   For example, if you want to restrict users from running Microsoft Internet Explorer:
   1. Right-click the following registry key, point to New, and then click String Value:
      HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion \Policies\Explorer\DisallowRun
   2. Type 1, and then press ENTER.
   3. Double-click the 1 value that you created in the previous step.
   4. Type iexplore.exe in the Value data box, and then click OK.
6. Quit Registry Editor, and then restart the computer.

Troubleshooting

Group Policy background processing can take up to 5 minutes to be refreshed on domain controllers and up to 120 minutes to be refreshed on client computers. To force background processing of Group Policy settings, use the Secedit.exe tool:

1. Click Start, and then click Run.
2. In the Open box, type cmd, and then click OK.
3. Type secedit /refreshpolicy user_policy /enforce, and then press ENTER.
4. Type secedit /refreshpolicy machine_policy /enforce, and then press ENTER.
5. Type exit, and then press ENTER to quit the command prompt.

 More: http://support.microsoft.com/kb/324036

Registry editing has been disabled by your administrator

1/ Vào Start -> Run -> gpedit.msc
Ở cửa sổ bên trái vào User Cofniguration -> Administrative Template -> System
Ở cửa sổ bên phải: double click vào Prevent access to registry editing tools
Nếu nó ở trạng thái Not Configured hoặc Enabled thì bạn chọn Disabled -> OK
Nếu nó đang ở trạng thái là Disable thì chọn thì bạn chọn là Enabled, click vào OK, rồi chọn lại là Disabled -> OK

2/ Trong trường hợp ngay cả việc mở gpedit.msc cũng bị ngăn cấm. Để Enable Registry editing, tôi xin cung cấp thêm giải pháp này:

- Mở Notepad, soạn nội dung sau:

var Shell = new ActiveXObject("WScript.Shell");
Shell.RegWrite ("HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\DisableRegistryTools",0,"REG_DWORD");

- Lưu lại với phần mở rộng: *.js
- Thực thi file .js để 'enable' (0) hoặc 'disable' (1). 

My Network Place

Hide My Network Places from Explorer:

• Open Registry Editor and navigate to:

HKEY_CLASSES_ROOT \ CLSID \ {208D2C60-3AEA-1069-A2D7-08002B30309D}
\ ShellFolder

• Backup the key by exporting it to a REG file. See method 2 here
  
• In the right-pane, create a new REG_DWORD value named Attributes
• Double-click Attributes and set 20180000 as the Value data

Some Registry tips

Add OpenWith to all files Backup/Restore the Registry Lockout unwanted Users Customize the System Tray Changing Windows' Icons Change Registered User Change Registered Owner Add/Remove Sound Events Open a DOS Window to a folder Change Exchange/Outlook Mailbox Add Apps to Right Click Add Explore to all Folders Creating a Logon Banner Creating a Default File Opener Changing the Tips of the Day Automatic Screen Refresh Disable Password Caching Removing Items from NEW Recycle Bin Edits Disabling My Computer Changing Desktop Icons Turn Off Window Animation Change/add restriction and features Change Keyboard layout