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This article explains How to fix  the Task Manager disabled by Administrator error in Windows XP/Vista. The steps outlined below are easy to follow.

If you're not part of domain environment and one day find that you're unable to access the Windows Task manager due to the error message below, there's a good chance you've been infected with a virus.





You can fix this using the following method:
-Click Start >> Run

- Paste the following command into the Run dialog box:
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 0 /f

-Click OK (A restart may be required)

Disable Interactive Services Detection Dialogue In Windows 7

Here’s a guide on how to disable Interactive Services Detection Pop-ups in Windows 7:

1. Go to Start – Type in services.msc inside the Windows Search box then press enter.

2. Under Services window, scroll down until you find Interactive Services Detection. Right click it then go to Properties.

3. Under General tab, choose Disabled from the Startup type options.

4. Click Apply and then OK. Reboot your PC.

validating identity -wireless Setup

1)Open your "Wireless Network Connection" where it displays the available wireless networks.

2) Click "Change Advanced Settings". Now go to "Wireless Network Connection properties",
3) Click the "Wireless Networks" tab.
4) Click "Properties" then
5) open the "Authentication" tab. UNCHECK the top box "Enable IEEE 802.1x authentication for this network".

How do I uninstall Deep Freeze?

Disable Deep Freeze before uninstalling it.
To disable Deep Freeze:

1. Hold down the shift key and double-click the Deep Freeze icon. Alternatively, you can press CTRL+ALT+SHIFT+F6. 
2. Enter your password and click OK.
3. If you have not yet entered a password you should be able to click OK without entering a password.
4. The Boot Options dialog is displayed. Select "Boot Thawed" and click OK. This will disable Deep Freeze on the next reboot.
5. Reboot your computer. After the computer reboots, you are ready to uninstall Deep Freeze.

To uninstall:

1. Locate the installation file you used to install Deep Freeze on your computer. By default, the name of this file is called "DF5Std.exe" for versions 5.X and "DF6Std.exe" for versions 6.X.
2. Run the installation file (DF5Std.exe or DF6Std.exe).
3. Select the option to "Uninstall"

Deep Freeze is uninstalled and your computer is rebooted.