Task Manager Is Disabled By Administrator, Folder Options in Tools is Missing , Cannot Run Regedit,

"Task Manager Is Disabled by Administrator"

Are you having this problem when you're trying to open your task manager?

Other than this problem, Do you have a problem opening your registry? Folder option in tools is missing?

I'm not so sure if there are other reasons in why this is happening. However,when I did the steps below, these three problems were fixed.

First of all, you need to download HijackThis. Just google it and download. Then, see the entries and if you see something similar like the entries below:

F2 - REG:system.ini: Shell=Explorer.exe RVHOST.exe
O7 - HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System, DisableRegedit=1

Delete these two entries. However, please ask an expert if you're not sure about this. Go to a computer tech forum, introduce yourself, and ask them about your HijackThis log..But, make sure you post it under HijackThis log section.

After you delete the two entries, open the 'Misc tools' section and 'open process manager'. See if there is any "Rvhost.exe" process running. If there is, stop the process, if there isn't, then you can proceed to registry editing.

*Warning!: Editing your registry and opening your windows folder should not be done unless you know what you're doing. I will not be responsible for anything that will happen after you do this step

Open your registry by typing 'regedit' in start->run, go to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies and search for something like 'NoFolder Option' in explorer. Then delete the entry. Exit your registry.

Go to your windows folder and open the system32 folder (E.g. C:\Windows\System32\) and find 'rvhost' file and delete it. Then,restart your computer.

After doing this method, you will be able to access your registry, your folder option will be visible and you can open your task manager.

Try this method and see if it's working.