7-Zip: Getting Extraction Failed "Unsupported Method" when trying to self-extract and run setup.exe for a 7-zip file that has a password

I am creating the zip file using the 7-Zip "Add to Archive" window. Name is ccc.7z with a password specified. All other options use the default.

I run the DOS command: copy /b 7zSD.sfx + config.txt + ccc.7z ccc.exe

I am launching ccc.exe and I want the user to have to specify the password that is in the archive.

My config.txt contents are:

The message in Extraction Failed window is "Unsupported Method". If i remove the password from the archive, the extraction works without error.

Any help would be much appreciated.

Solution 1:

I encounter the same issue when create *.7z file using LZMA2. LZMA2 is not supported by SFX tool. It works fine for me after I changed LZMA2 to LZMA