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if I have, for example, some locked file or folder, how can I get information about who locked (it is in use by another program) my file or folder without having to install other programs?

Is there any way to view this info in task manager?

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Wait, what exactly do you mean by “locked”? Do you mean it is in-use? Is it encrypted? Do you no longer have access privileges to it? – Synetech Aug 15 '11 at 6:56

You can also use unlocker. It easier to use than programs from sysinternals but it will install bing toolbar by default

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There is a portable version available as well. – Karan Sep 21 '12 at 17:01
…which addresses the part of the question that specifically says without having to install other programs. – Synetech Aug 12 '13 at 1:25

No, the Task Manager does not have the ability to display open (file) handles.

Process Explorer (GUI) and Handle (CLI) are Microsoft tools that can do it. They are not included with Windows, but don’t have to install them, you can simply extract them from the ZIP files and run them. You can also run them directly from the website via the link on the side.

In Process Explorer, you can press Ctrl+F, then enter the filename (or part of the filename) and click Search. ProcExp will display a list of processes that have open handles to the specified file. Double-clicking on an entry in the search-results list will jump to that item in the process tree where you can get more information about it by pressing Alt+Enter. In the processes’ Properties dialog box, you can see the user that ran the process in the User field (go figure).

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any ideas, without installing those tools? – macy Aug 15 '11 at 6:51
You don’t have to install them, you can run them directly from the site (assuming that you have admin privileges). But I think it’s more important to first figure out what you mean by “locked”. – Synetech Aug 15 '11 at 6:57
thanks but what about folders with a lot of files? – macy Aug 15 '11 at 7:03
What about them? Do you mean you have a folder in which many of the files are locked? Just specify the folder in your search to view all the open handles. – Synetech Aug 15 '11 at 7:04
thanks for the answer but if for example I don't have internet and can't download this program, what am I supposed to do? do I have any system infromation for this? – macy Aug 15 '11 at 11:04

Under Windows 7 you can use Resource Monitor - either from Task Manager, or directly (enter resmon into Run box). Then select CPU, enter part of name into search box in Associated handles to see a list of proceses.

Following screenshot should explain it better: enter image description here

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