You don't need to register or pay for the tool. You can use the program on any computer, including a computer in a commercial organization. The unRAR code is under a mixed license: GNU LGPL + unRAR restrictions. Most of the source code is under the GNU LGPL license.

With these tools, you can easily send large quantities of information or open compressed files you receive without hassle. Even using the 64-bit version of 7-zip, and running the installer as admin, and running 7zip as admin & changing the settings, it still didn't work until I did this.7-Zip 64-bit is a file archiver with a high compression ratio. This was the only thing that worked for me.

Assuming the 7-zip settings and associations are set up, the context menu should now show!.

Then close all explorer windows, click Options-> Restart Explorer and then open a new folder window and right click on a zip file.

Then untick Options-> Show 32-bit Shell Extensions and find the 7-zip Context Menu extension again (filename should be 7-zip.dll) and enable it, this is the 64-bit one. If you find 7-zip Context Menu extension and the Filename column shows 7-zip32.dll and it is enabled, then you should right-click and Disable selected items

Sort by Description column and look for 7-Zip Shell Extension.

Run it and make sure Options-> Show 32-bit Shell Extensions is ticked.

Download and unzip ShellExView (圆4 version) from the NirSoft website.It turns out that even with 64bit 7zip installed you can end up with 32bit shell extension enabled, possibly a hangover from previous 32-bit install. If you're using the correct bitness of 7zip and have the correct settings set but it still doesn't work, then it may be that the wrong Explorer shell extension is enabled.

7zip win 10