Author: Nosa Lee
Original Address: https://www.seeksunslowly.com/disable-task-manager-dot-net
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Sometimes, we need to disable Windows Task Manager temporarily to avoid user end the special program.

I found some related information on the Internet, some said that open C:\windows\system32\taskmgr.exe and C:\windows\syswow64\taskmgr.exe by binary stream, so as to let user cannot open Windows Task Manager manually; some said that add a 32-bit DWORD registry item under HKEY_CURRENT_USER\Software\Microsoft\Windows\Current Version\Policies\System path, name it as DisableTaskMgr and set to 1.

Above methods can work on XP- Windows, but cannot work on Vista/Windows 7+ due to UAC and permissions.
Here is my simple and feasible method after research/summarize the possible ways for VB 2008:
1. Create a new Windows Forms Application.
2. Put a Timer control (under Components category) on the Form.
3. Select Timer1 at the bottom of the Form Designer, and the press , set Enable = True, Interval = 600.
4. Double-click Timer1, paste the following code:
[cc lang=”vbnet”]
For Each p As Process In Process.GetProcesses()
If p.ProcessName.ToLower = “taskmgr” Then p.Kill() : Exit For
Next
[/cc]
5. Run it, try to open Windows Task Manager by more ways (Start menu, right-click taskbar, press ), all are unable to open it: either immediately close, or prompt “Windows cannot access the specified device, path or file. You may not have the appropriate permissions to access the item.” (on Windows 7). Thus, you have got it works.

Download the source codes
https://www.seeksunslowly.com/downloadable-source-codes/disable-task-manager-dot-net.zip

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