What is CRC SHA – Remove it from Right Click in Windows 10

Whenever you install the 7 Zip compression program on your Windows system for zipping or unzipping the zip files, you will notice there is a new entry named CRC SHA in the context menu.

Further, if you hover over the CRC SHA option, you would see more options, such as CRC-32. CRC-64, SHA-1, and SHA-256.

CRC SHA option in the right-click menu

So, what is this CRC SHA entry? Is it harmful to your system? How to remove CRC SHA from Windows right-click menu?

Let us find out!

  Useless Windows 10 Features which Microsoft Must Remove

What is CRC?

CRC is the short form for the Cyclic Redundancy Check. It is basically used for checking the unintentional changes to raw data in digital networks and storage devices. CRC is quite popular because it is easy to execute in binary hardware, simple to analyze mathematically, and quite effective in detecting the common errors caused by noise in transmission channels. The algorithm is based on the cyclic codes, and the check value is redundant, therefore the name CRC.

What is SHA?

SHA is the acronym to Security Hash Algorithm. It was developed by the National Security Agency(NSA). SHA is basically used for verifying the integrity of the data or information you download from the internet. Whenever you download anything from the internet, SHA checks whether it is corrupted or has any other issues.

What is the CRC SHA option in Context Menu?

CRC SHA option collectively checks the integrity of the files. Whenever you download any file from the internet using CRC SHA, you can generate its hash code. Now this generated hash code can be compared with the hash code of the developer. 

If the hash code created by the CRC SHA option of 7 zip matches the developer’s hash code, then the file is original and safe to use.

However, if the hash codes don’t match, then there is a possibility that the file has been interfered with and modified by someone. In that case, it is unsafe to use that file.

CRC SHA option can be quite useful when you share the confidential files with someone. Before sending, you can generate the hash code of the file, then after receiving the recipient can also create the hash code and check if that matches with sender’s hash code. If both code matches, then there is no breach.

How to remove CRC SHA from the Context Menu?

CRC SHA is a useful option but not in everyday use. It is also unnecessary for common users. So it is evident that many Windows users may want to remove it from the context menu.

Here is how you can remove it from the Windows program context menu.

  1. On the Windows search bar, type 7 Zip, and open the 7-Zip File Manager program.
    7-Zip File manager

  2. On the 7-Zip window, click on Tools and select Options.
    7-zip tools

  3. Switch to the 7-Zip tab and uncheck the CRC SHA option under Context Menu items.
    Uncheck CRC SHA option

  4. Click Apply and then OK to finish the task.

That’s it. The CRC SHA option would be removed from the context menu. You don’t require to restart the system to make the changes effective.

CRC SHA removed

In case you want to enable it again, repeat the same steps, and check the CRC SHA option this time.

  6 Best Rootkit Removers for Windows 10

Bottom Line

CRC SHA is a useful option for validating a file’s authenticity. However, since most people do not know its functionality, they think it is a virus and wants to remove it. Before you go for removing the CRC SHA option, evaluate whether you need this functionality or not.

1. Is CRC SHA safe?

CRC SHA option is totally safe and, in fact, quite useful for checking the integrity of the downloaded files from the internet. Most people are unsure about CRC SHA safety because they are unaware of its functionality.

2. Is it safe to remove CRC SHA from my windows context menu?

Though the CRC SHA option is quite helpful, it is safe to remove it from the Windows right-click menu if you do not find it usable. Since it is not a system file, removing it would not cause any issue in the system’s working.

  How to Check the Health of Your PC

Leave a Comment