How to Open a DMP File on Windows, Mac, or Linux

What a DMP file is and why you might have one

A DMP file is a memory dump — a snapshot of a program's memory at the moment it crashed or froze. Windows creates these automatically when software stops working unexpectedly. You will usually find them in a folder called "Minidump" buried in your system files, or Windows will offer to save one when you close a crashed program.

Most people never need to open a DMP file themselves. If your computer crashed, Windows already logged what happened. But if you are troubleshooting a recurring problem, sending crash details to a software maker, or working with a tech support person, you may need to read what is inside one.

The challenge is that DMP files are not human-readable in a text editor. Opening one in Notepad shows garbage characters. You need a tool designed to decode the memory dump and show you what the program was doing when it failed.

Key Takeaways

DMP files are memory dumps created automatically by Windows when a program crashes, and they contain technical data about what the program was doing at that moment.
On Windows, the built-in Windows Debugger (WinDbg) is free and can open DMP files, though it has a steep learning curve for non-technical users.
BlueScreenView is a simpler alternative that reads crash dump files and displays the information in plain language without requiring debugging knowledge.
Mac and Linux do not create DMP files in the same way Windows does, but similar crash logs exist in different formats and locations on those systems.
If you are sending a DMP file to tech support, compress it first — these files are often several hundred megabytes and take a long time to upload.

Using Windows Debugger (WinDbg) on Windows

The official tool for reading DMP files is Windows Debugger, called WinDbg. Microsoft provides it free as part of the Windows SDK (Software Development Kit). It is powerful but designed for programmers, so the interface is not intuitive for casual users.

To read WinDbg, go to the Microsoft Store on your Windows computer and search for "Windows App SDK". Install it, then search your computer for "WinDbg" and open it. When WinDbg launches, go to File > Open Dump File and navigate to your DMP file. It will load the dump and display a command prompt window.

Once the dump is open, type !analyze -v at the command prompt and press Enter. WinDbg will scan the dump and print out what caused the crash — the name of the program, the error code, and which part of the code failed. The output is technical, but the first few lines usually tell you enough to understand the problem or pass to someone who can help.

Using BlueScreenView for a simpler read

If WinDbg feels overwhelming, BlueScreenView is a free alternative that reads the same DMP files and presents the information in a table instead of command-line text. It is designed specifically for crash dumps and shows the driver or program name, the error code, and the memory address where the crash occurred — all in one window.

read BlueScreenView from Nirsoft (search "BlueScreenView Nirsoft" in your browser). It is a single executable file with no installation required. Run it, and it will automatically scan your computer for DMP files and list them. Click on any dump in the list, and BlueScreenView shows you the details in the lower pane.

BlueScreenView is most useful if you want a quick summary without learning debugger commands. However, it shows less detail than WinDbg and cannot help you dig deeper into the crash if you need to. For most people troubleshooting a one-time crash, it is enough.

Finding DMP files on your Windows computer

Windows stores crash dumps in a hidden folder. To find them, open File Explorer and type this path into the address bar: C:\Windows\Minidump. Press Enter, and you will see a list of DMP files, usually named something like "Mini010124-01.dmp" with a date and number.

If the Minidump folder is empty but you know a program crashed recently, check the Desktop or Downloads folder — some programs save their own crash dumps there instead of using the Windows system folder. You can also search your entire computer by opening File Explorer, clicking the search box, and typing *.dmp to find all dump files.

If you do not see any DMP files and you want Windows to create them when crashes happen, you need to enable crash dump creation in Windows settings. Go to Settings > System > About, scroll down and click "Advanced system settings", then click the "Advanced" tab. Under "Startup and Recovery", click "Settings" and make sure "Write an event to the system log" is checked. You can also choose whether to save a small dump or a full dump — small dumps are faster to create and easier to share.

What to do with a DMP file you cannot open

If neither WinDbg nor BlueScreenView will open your DMP file, the file may be corrupted or incomplete. Try these steps: first, make sure the file actually ends in .dmp — sometimes Windows saves crash information with a different extension. Second, check that you have enough disk space; opening a large dump file requires temporary space on your drive.

If the file is still unreadable, the crash dump itself may have been damaged when Windows wrote it to disk, which can happen if the system ran out of space or lost power during the save. In that case, the file cannot be recovered. If you need to troubleshoot the crash, wait for it to happen again and let Windows create a new dump.

For crashes that happen repeatedly, do not rely on opening the dump yourself. Instead, note the error code or program name from the crash message, search the software maker's support site for that error, or contact their support team with the DMP file attached. They have tools and experience to decode it faster than you can.

DMP files on Mac and Linux systems

Mac and Linux do not create DMP files in the Windows sense. Instead, they store crash information in log files. On Mac, crash logs appear in Console (search "Console" in Spotlight) under ~/Library/Logs/Crash Reports. On Linux, crash information goes to the system journal, which you can read by opening a terminal and typing journalctl -xe.

If you have a DMP file on a Mac or Linux computer, it likely came from a Windows program running through compatibility software like Wine or a virtual machine. In that case, treat it as you would on Windows — use WinDbg or BlueScreenView if you have Windows installed, or send the file to the software maker for analysis.

Sharing a DMP file with tech support

DMP files are often 100 to 500 megabytes in size, which makes them slow to upload. Before sending one to a support team, compress it using your computer's built-in zip tool. Right-click the DMP file, select "Send to" (Windows) or "Compress" (Mac), and choose Zip. The compressed file will be 10 to 20 percent of the original size.

When you send the dump, include a description of what you were doing when the crash happened, what program crashed, and how often it occurs. This context helps the support team understand what to look for in the dump. If the file is still too large to email, ask the support team if they have a file upload portal or cloud storage link where you can send it instead.

Frequently Asked Questions

Can I delete DMP files to free up space?

Yes. DMP files are only useful for troubleshooting crashes that have already happened. Once you have saved or shared the dump, or if you do not plan to investigate the crash, you can delete the file. Deleting old dumps will not affect your computer's performance or stability.

What does the error code in a DMP file mean?

Error codes are hexadecimal numbers that identify the type of failure — for example, 0xC0000374 means heap corruption. You can search the error code on Microsoft's support site or the software maker's site to find what it means. Most error codes point to either a driver problem, a memory issue, or a bug in the program itself.

Why does my computer keep creating DMP files?

Repeated crashes usually mean a driver is outdated, hardware is failing, or the program has a bug. Check Windows Update to make sure all drivers are current. If crashes continue, run a memory test (search "Windows Memory Diagnostic" in the Start menu) to rule out bad RAM. If the crashes only happen in one program, uninstall and reinstall that program.

Can I open a DMP file in a regular text editor?

You can open it, but you will see only random characters and symbols. DMP files are binary files, not text, so a text editor cannot decode them. You must use a tool like WinDbg or BlueScreenView that knows how to read the binary format.

Is it safe to read BlueScreenView or WinDbg?

Yes. Both are legitimate tools from reputable sources — BlueScreenView from Nirsoft and WinDbg from Microsoft. read them only from the official sites (search the tool name plus the maker's name to be sure) and avoid third-party read sites that may bundle unwanted software.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.