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Oct 29, 2008
Solution for Can’t Access Task Manager Problem
by GlueTooth / General
Being unable to access one of the most important features in Windows can be a true nightmare. This means that you cannot control processes, to activate them or shut them down. There are many reasons why you’re unable to access task manager and this article will try to explain how to solve this annoying issue. How to recognize the problem? Usually, you will notice this problem if you right click on the clock in the Windows taskbar. You’ll see that the Task Manager item is grayed out:  Or, additionally if you try to run taskmgr.exe manually, you’ll get this message:  Reason for the problem? As can be seen in the picture, it’s possible that you as an administrator disabled Task Manager, using Windows settings. If you didn’t do that, then possibly a virus did. Disabling Task Manager is one way that viruses use to make it harder for a user to deal with their infections. Basically, this means that if you cannot control processes that run on your system, you cannot locate and shut down applications that viruses use. Before we proceed any further, it’s recommended that you should run a complete antivirus scan of your machine, with recent updates. Once you come back virus-free (if you had infections), you can proceed with the fix. Fixing the problem If you have Windows XP Pro, there's a nifty user interface to directly edit the setting you want to repair. Click Start, then click Run and type in gpedit.msc (like shown in the picture)  Press OK. This runs the Group Policy Editor. Once in the Group Policy Editor, expand in turn:
You should see something like this:  Double click on Remove Task Manager to change its setting  It should be enough to click on Not Configured and then OK and Task Manager is available once again. If you don't have Windows XP Pro, then you'll need to edit the registry manually. To do that click Start, then click Run, type in regedit, and click on OK. Expand these registry keys in turn:
You should see something similar to this:  Then, Right Click on the DisableTaskMgr item:  Click on Delete, confirm that you want to delete, and Task Manager should be available once again. One thing you should keep in mind is that it's possible that if you work in an environment managed by a centralized policy, these settings may have no effect. Your IT administrator may set things up so as to disable task manager, as well as other things at the domain level. You'll have to check things with your system administrators if this is the case.
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