how to check sha256 checksum windows 10
Verifying a SHA256 checksum on Windows 10 is straightforward. It ensures that the file you downloaded has not been tampered with or corrupted. You can do this by using the built-in Command Prompt tool. Open Command Prompt, navigate to the directory containing your file, and use the certutil command followed by the file name. This will generate and display the SHA256 checksum, which you can then compare to the original checksum provided.
Step-by-Step Tutorial on How to Check SHA256 Checksum Windows 10
This step-by-step guide will walk you through the process of checking a SHA256 checksum on a Windows 10 computer. By the end, you’ll be able to confirm the integrity of any file you download.
Step 1: Open Command Prompt
First, open the Command Prompt on your Windows 10 computer.
You can do this by typing "cmd" in the search bar next to the Start menu and hitting Enter. Alternatively, press Win + R, type "cmd," and hit Enter.
Step 2: Navigate to the File Location
Once the Command Prompt is open, navigate to the directory containing the file you want to check.
You can do this by typing "cd" followed by the directory path. For example, if your file is in the Downloads folder, type cd Downloads and hit Enter.
Step 3: Enter the certutil Command
Now, use the certutil command to generate the SHA256 checksum.
Type certutil -hashfile filename SHA256 and hit Enter. Replace "filename" with the actual name of your file, including its extension.
Step 4: Compare the Checksums
After running the certutil command, the checksum will be displayed.
Compare this checksum with the one provided by the source from where you downloaded the file. If they match, your file is intact. If not, the file may be corrupt or tampered with.
What Happens Next
Once you’ve checked the SHA256 checksum, you’ll know if your file is secure and unaltered. Matching checksums confirm that the file you have is exactly what was intended by its creator. A mismatch suggests the file could be corrupt or compromised, and you should avoid using it.
Tips for How to Check SHA256 Checksum Windows 10
- Verify Source: Always get the original checksum from a trusted source.
- Check Regularly: For critical files, make it a habit to always check the checksum.
- Be Cautious: If the checksums don’t match, do not use the file.
- Use Shortcuts: Create a batch file to speed up the process if you frequently check checksums.
- Documentation: Keep a record of checksums for important files for future reference.
Frequently Asked Questions
What is a SHA256 checksum?
A SHA256 checksum is a unique string of characters created by a cryptographic hash function, used to verify data integrity.
What is certutil?
Certutil is a command-line tool that’s part of Windows, used for certificate services, and it can also generate checksums.
Is it safe to use Command Prompt?
Yes, using Command Prompt is safe as long as you follow trusted instructions and do not run unfamiliar commands.
Can I use other tools apart from certutil?
Yes, there are third-party tools like HashMyFiles and QuickSFV that can also verify checksums.
What if my checksums don’t match?
If checksums don’t match, do not use the file. It may be corrupt or have been tampered with.
Summary
- Open Command Prompt.
- Navigate to the file location.
- Enter the certutil command.
- Compare the checksums.
Conclusion
Checking the SHA256 checksum on Windows 10 is quick and crucial for ensuring file integrity. By following these simple steps, you can confidently verify that the files you download or receive are safe and unaltered. Always remember to compare the checksum with the one provided by the original source. If there’s a mismatch, it’s a red flag that something might be wrong with the file. For further reading, you might want to explore more about cryptographic hashes and their role in digital security.
So, the next time you download a file, take a few extra seconds to verify its SHA256 checksum. It’s a small step that can save you from potential headaches down the line. Happy computing!
Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.