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Microsoft Windows 7

7z – “unknown method” or “unknown compression method”

This post containse the steps to fix the error messages “unknown method” or “unknown compression method” with 7 Zip

Solution to the errors: “unknown method” or “unknown compression method” with 7 Zip.

When you try to extract a .7z (7-Zip) file show the following errors:

unknown method

Or

unknown compression method

Solution:

Download and install the latest version of the 7-Zip software from


http://www.7-zip.org/download.html

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