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In addition, your connection to it must be secure. Otherwise you may be checking against hashes that have also been tampered with, giving you false confidence that your file is legitimate.

This increases the risk even more, since there is a chance that you are not really connected to the website you think you are accessing. Someone on the Internet or on your WiFi connection or network can substitute a fake website that seems to be at the correct address, but provide hashes for a tampered file.

It does not mean that it is not infected with malware. Remember that anyone's computers can get infected, even the people from whom you are getting the file, resulting in the files they distribute being infected. The hashes provided may have been generated unknowingly or even knowingly after those files were infected. You should always scan the file you obtain with an antivirus, and perhaps even upload it to one of the free online antivirus sites that scan using multiple antivirus programs.

Windows 7, 8, 8. Note that if you are intimidated by the thought of using a command-line program, and prefer to use a program sporting a graphical user interface, where you can just click buttons and the like, you will have to install a third party ie, non-Microsoft program.

Although the latter is focused on MD5, some of the free tools it links to also support multiple types of hashes. I will not deal with such programs here, though, since it's outside the scope of this tutorial.

Copy or move your file to somewhere where you can easily access it, such as your desktop. If you are not familiar with working on the command line, copy or move the file to your desktop.

This will help you with one of the steps below, since you can just use my instructions verbatim. Open a command line prompt. To do this, click the Start menu button and type "cmd" without the quotation marks. The words "Command Prompt" should appear at the top of the menu.

Click it to run it. The exact words will not be the same, since your Windows account name will probably be different from mine. Privacy Statement. See System Requirements. Available on PC Hub. Show More. People also like. GWSL Free. Alpine WSL Free. Windows Terminal Preview Free.

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Which tool can show the hash info with other basic details. I know I cam do this manually. Is there a backup program that will do this automatically that anyone can recommend?

Jim, you might want to take a look at SyncBack Pro by 2brightsparks. I have used it for years, and it includes a Verification Utility. The backup is also stored in the native file format, not proprietary, so individual backup folders and files can be easily accessed.

It is not freeware, but it is reasonable, and certainly our data is worth a lot more. In return, you get no ads, multiple licenses, free minor upgrades, a nice GUI, high quality software, and peace of mind. Good luck! An option that is built into current versions of Windows is using the Get-Filehash Cmdlet to generate the hash. Full details here for documentation docs. This would allow the file to be tested for corruption easily. I know it is not perfect but good enough for most of us.

It would also allow another program to quickly find potential duplicate files. This would be very fast as each file already has its own checksum. This seems a very simple idea — it must have been done — can anyone suggest suitable windows apps?

And of course any compressed file in a lossy format will change if opened and re-saved. Not all file systems support extended attributes, and not all file transfer protocols support them either. A prime example is a file copied between a Windows and a Mac file system.

They both implement file streams extended attributes , but implement them differently and are therefore incompatible. The same is true for ext-2, 3, and 4 on Linux systems. Jam Software: Jam has several interesting tools, including the command line filelist. Out put is in whatever separated value format you desire. Easy to load into a sqlite db, or Maria for reporting. Duplicate files are easy to locate. If you are comfortable with the command prompt, you can use my free utility, CrcCheckCopy.