Open Resource Monitor in Windows 10: 7 Ways

You can open Resource Monitor in Windows 10 by typing resmon into the Start menu search box and pressing Enter, or by pressing Win + R, typing resmon, and clicking OK. It is a built-in system tool that shows real-time data on CPU, memory, disk, and network usage, with more detail than Task Manager. Here are all the reliable ways to launch it, plus tips for using it effectively.

What Is Resource Monitor?

Resource Monitor (resmon.exe) is a Windows utility that has been included since Windows Vista. It provides a detailed, real-time view of how your computer’s hardware resources are being used. Unlike Task Manager’s default “Processes” tab, Resource Monitor shows not just which processes are running, but which specific files, network endpoints, and memory addresses they are using. This makes it invaluable for diagnosing high CPU usage, memory leaks, disk bottlenecks, or suspicious network activity.

The tool is organized into five tabs: Overview, CPU, Memory, Disk, and Network. Each tab has a top pane listing processes and a bottom pane with more granular details—for example, the CPU tab shows “Services” and “Associated Handles,” while the Network tab shows “TCP Connections” and “Listening Ports.” You can expand or collapse these panes by clicking the small arrows on their title bars.

Method 1: Start Menu Search (Easiest)

1. Click the Start button (or press the Windows key).
2. Type resmon (you do not need to type “Resource Monitor” – the executable name is enough).
3. Click the Resource Monitor app that appears under “Best match.”

This works on any Windows 10 version. If you prefer the full name, typing “Resource Monitor” also works. The search result will show the app icon (a small monitor with a graph).

Method 2: Run Dialog

1. Press Win + R to open the Run dialog.
2. Type resmon (or resmon.exe).
3. Press Enter or click OK.

This is the fastest method if you are comfortable with keyboard shortcuts. The Run dialog also accepts perfmon /res, which launches Performance Monitor and then switches to the Resource Monitor view—useful if you want to start the broader Performance Monitor tool.

Method 3: From Task Manager

1. Press Ctrl + Shift + Esc to open Task Manager.
2. If Task Manager opens in compact mode, click More details at the bottom.
3. Go to the Performance tab.
4. At the bottom of the window, click Open Resource Monitor.

This is a natural path if you are already in Task Manager and need deeper data. The Performance tab shows overall graphs; clicking the link opens Resource Monitor with the same resource highlighted.

Method 4: Command Prompt or PowerShell

1. Open Command Prompt or PowerShell (press Win + X and select either, or search for it).
2. Type resmon and press Enter.

This is useful if you are already in a command-line session or want to script it. You can also create a desktop shortcut that targets resmon.exe—the file is located in the System32 folder, so you can just use the name.

Method 5: From the Start Menu All Apps List

1. Click Start and then click the All apps button (the gear icon or the list icon, depending on your view).
2. Scroll down to Windows Administrative Tools (or Windows System on older builds).
3. Click Resource Monitor.

This is a bit slower than search, but it is useful if you want to browse the full list of administrative tools. On some Windows 10 versions, the folder is called “Windows Administrative Tools” and also contains Event Viewer, Disk Cleanup, and other utilities.

Method 6: Via Control Panel

1. Open Control Panel (search for it or press Win + X and select it).
2. Click System and Security.
3. Click Administrative Tools.
4. Double-click Resource Monitor.

This is the longest method, but it is a good fallback if the search index is broken or you are in a restricted environment. The Administrative Tools folder also contains Performance Monitor, which is related but more complex.

Method 7: Using the Windows Key + X Menu (Power User Menu)

1. Press Win + X (or right-click the Start button).
2. Select Task Manager (or Windows PowerShell if you prefer).
3. If you chose Task Manager, follow Method 3 to open Resource Monitor from the Performance tab.

This is not a direct shortcut, but it is a common path because the Power User menu is a quick way to reach many system tools. On some Windows 10 versions, the Power User menu also includes Computer Management, which has a “Performance” node that can open Resource Monitor via the “Monitoring Tools” subfolder.

How to Use Resource Monitor Effectively

Once open, the Overview tab shows four small graphs at the right side: CPU, Disk, Network, and Memory. The left pane lists processes. To filter the data, check the box next to a process name—this will highlight its activity in the graphs and show only its associated handles and modules in the lower panes.

• CPU tab: Shows per-core usage and lets you see which services are using CPU. The “Associated Handles” and “Associated Modules” panes let you search for open files or DLLs used by a process—type a file name to see which process has it open.
• Memory tab: Shows physical memory usage, including “Hard Faults” (which indicate disk paging) and “Commit” (virtual memory). The bar graph at the bottom shows how much memory is in use, standby, or free.
• Disk tab: Shows disk activity per process, with read/write speeds. The “Storage” pane lists logical drives and their active time.
• Network tab: Shows network activity per process, including TCP connections and listening ports. You can see which IP addresses a process is communicating with.

One common misconception is that Resource Monitor is the same as Performance Monitor (perfmon). They are different: Performance Monitor is a more advanced tool for logging and analyzing performance counters over time, while Resource Monitor is a real-time snapshot. If you need to record data over a period, use Performance Monitor; if you just need to see what is happening now, Resource Monitor is sufficient.

Common Problems and Solutions

• Resource Monitor won’t open: If nothing happens when you type resmon, try running it as administrator (right-click the search result and choose “Run as administrator”). If that fails, run sfc /scannow in an elevated Command Prompt to repair system files.
• Data appears frozen: The graphs update every second by default. If they are not updating, the tool might be paused—click View in the menu bar and uncheck “Pause” if it is enabled. Also, if the system is heavily overloaded, the graphs may lag.
• Can’t see all processes: Resource Monitor shows only processes you have permission to view. If you are not an administrator, some system processes may be hidden. Run it as administrator to see everything.
• Resource Monitor uses too much CPU itself: It is generally light, but if you have many processes, the lower panes can consume a few percent. Close the lower panes by collapsing them (click the arrow) to reduce overhead.

Frequently Asked Questions

Is Resource Monitor the same as Task Manager?

No. Task Manager shows a broader overview of processes, performance, and startup apps. Resource Monitor drills down into specific resources—like which files a process has open or which network connections it is using. They complement each other: Task Manager for quick checks, Resource Monitor for deep analysis.

What does “Hard Faults” mean in the Memory tab?

A hard fault occurs when a program needs data that is not in physical memory and must be read from the page file on disk. It is not necessarily a problem—it is a normal part of virtual memory. However, a high rate of hard faults can indicate that your system is low on RAM and constantly paging, which slows down performance.

Can I open Resource Monitor from the command line?

Yes. Open Command Prompt or PowerShell and type resmon (or resmon.exe). You can also use start resmon to launch it in a separate window. This is handy for automation or if you are working in a terminal.

How do I see which process is using a specific file?

Go to the CPU tab, expand “Associated Handles,” and type the file name (or part of it) in the search box. The list will show only processes that have that file open. This is useful when you get a “file in use” error and need to close the program that is locking it.

Does Resource Monitor work on Windows 11?

Yes, the same resmon command and the same interface are present in Windows 11. The methods listed here also apply to Windows 11, though the Start menu layout is slightly different (search still works the same way).

Why does Resource Monitor show multiple entries for the same process?

A process can have multiple threads, and each thread may appear as a separate line in the CPU tab. This is normal. You can click the “Process” column header to sort by name and group them, but they are still separate threads of the same process.

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