Do you encounter you are not able to open Registry Editor, Group Policy and Windows Task Manager? This step-by-step guide can help you safely and quickly fix all these problems.

1. Registry Editor cannot be opened

Solutions: The registry is Windows system main center, it records the vast majority of the operating system settings. In the Windows system, it comes with a registry editing tool that allows you to easily access and modify the registry, which is called Regedit. However, now online malicious programs make use of registry to modify the IE home page, it not only modifies the registry, but also prevents you from using the registry program modification. When you execute this command, there is a pop up dialog box saying:”registry editing has been disabled by the administrator.” At this time, the registry tool has been locked.

Here are the two methods to solve this issue:

A. Use scripts to fix this issue

1) Click “Start” menu, click “Program”, click “Accessories”, and then find “Notepad” command and execute it.

2) Input the following content in the Notepad:

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER \ \ Windows \ \ Microsoft Software CurrentVersion \ woman \ System \ “\” DisableRegistryTools] = dwords: 00000000

3) Select “Save” command from the file menu, and save it as “C:\reg.reg”.

4) Open the “Explorer”, switch to the disk C, double click “reg.reg” file.

5) At this moment, “are you sure to add C:\reg.reg information to the registry?” comes up, then click “Yes” to continue.

Then dialogue box “C:\reg.reg information has been successfully added to the registry” pops up, it means the data import success. You need to click the “OK” to close the dialog box.

B. Solve the problem with Group Policy

In Windows 2000/XP/2003, click “Start”->”Run” then input “Gpedit.msc”, press Enter key to open the Group Policy. Then expand “User Configuration->Administrative Templates->System”, double-click the right window  of “stop access to the registry editing tools”, select “Disabled” in the pop-up Window, press “OK” to exit the Group Policy, then you can unlock the registry.

2. EXE file cannot be opened

Solutions: Once the exe open with is infected with Trojan or virus, then you are not able to open any executable file.

1) First change the regedit.exe to or regedit.scr.

Run, search for this entry: hkey_classes_root\exefile\shell\Open\command, change the default value to %1%, then restart the computer. After that, change the back to regedit.exe.

2) Save the following contents as exefile.reg, then double click and import to the registry, or run regedit exefile.reg in DOS operating.

Windows Registry Editor Version 5.00


@=\%1\ %*

3) (Only applies to win2000 / XP system) :

First, change cmd.exe to or cmd.scr.

Second, run

Third, run the following two commands: ftype exefile=%1 %* assoc .exe=exefile

At last, change back to cmd.exe.

3. TXT documents cannot be opened

Solution 1: Apply antispyware to figure out and remove viruses, then re-associating the TXT file. The method is: Click “My Computer”->”Tool”->”Folder Options”->”File Type” to find the txt file, “Change” the related files as Notepad programs, if you cannot find the option, then find the “New” option.

Solution 2: Open Registry Editor, expand KEY_LOCAL_MACHINE\SOFTWARE\Classes\txtfile\shell\Open\command, and then change “C:\Windows\System32\SQIHIDE.EXE “%1″”to “C:\Windows\NOTEPAD.EXE”%1″”.

4. Group Policy cannot be unfolded

Five ways to fix unable to open the Group Policy:

Method 1: Click “Start” menu, click “Run”, type “regedit” (not including the exclamation points) to open the Registry Editor, then change the Restrict_Run value from HKEY_CURRENT_USER\Software\Policies\Microsoft\Mmc\{8FC0B734-A0E1-11D1-A7D3-0000F87571E3}\Restrict_Run and HKEY_CURRENT_USER\Software\Policies\Microsoft\MMC\{0F6B957E-509E-11D1-A7CC-0000F87571E3}\Restrict_Run to “0”. After that, restart computer to take all changes into effect.

Method 2: Click “Start” menu, click “Run”, type “regedit” (not including the exclamation points) to open the Registry Editor, change the HKEY_CLASSES_ROOT\CLSID\{8FC0B734-A0E1-11D1-A7D3-0000F87571E3}\InProcServer32 default value to “%SystemRoot%\System32\GPEdit.dll”. After that, restart computer to take all changes into effect.

Method 3: Click “Start” menu, click “Control Panel”, then open “System”, open “System Properties”, click “Advanced” tab, then hit “Environment Variables”, modify the variable path to  %Systemroot%\System32;%Systemroot%;%Systemroot%\system32\WBEM

Method 4: Click “Start” menu, click “Run”, then input “regsvr32filemgmt.dll ((not including the exclamation points)

5. All msc files cannot be opened

1) Re-register msxm13.dll, ways: click “Start” menu, click “Run”, import: regsvr32 C:\Windows\system32\msxml3.dll

2) “mmc.exe” has been forbidden, you just need to disable “mmc.exe”.

6. Cannot open Windows Task Manager

Open the CMD, type this command: tasklist. Then click “Start” menu, click “Run”, input “regedit” to open Registry Editor and navigate to this entry: HKEY_CURRENT_USER\software\microsoft\windows\currentversion\policies\system

Then modify disabletaskmgr value on the right pane to 0 or remove this key value or you can click “Start” menu, click “Run”, type “gpedit.msc” to open the Group Policy, click “User Configuration”, double-click “Administrative Templates”, double-click “System”, double-click “Alt+Ctrl+Del Options”, double-click “Remove Task Manager”, check “Not Configured”, click “OK”.

7. Cannot open “My Computer”, “My Documents”, etc.

Solutions: It may be the Explorer program error. This problem can be solved through the following methods.

1) Open Notepad, add the contents listed below to the Notepad, save it as AAA.bat file. Then open and click “OK” in turn:

regsvr32 appwiz.cpl

regsvr32 mshtml.dll

regsvr32 jscript.dll

regsvr32 msi.dll

regsvr32 “C:\Program Files\Common Files\System\Ole


regsvr32 “C:\Program Files\Common Files\System\Ado\Msado15.dll”

regsvr32 mshtmled.dll

regsvr32 /i shdocvw.dll

regsvr32 /i shell32.dll

2) If the above ways cannot repair, please copy the following contents into Notepad, and save the file as yezi.reg file, and then open it:

Windows Registry Editor Version 5.00


@=”\”%1\” %*”

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