Windows 11 7z.exe fails, but only if it is located in a specific directory

[Mysteron347]

I place 7z.exe in a specific location (c:\batch) which contains many utilities and is located on the PATH.This arrangement has worked for many years. One day, it simply stopped working for no apparent reason.If I executed 7z from the command prompt, instead of a syntax list, nothing was sent to the screen and the program terminated. This error occurs if I invoke "7z" "7z.exe" or "C:\batch\7z[.exe]" If I change the name to "7q.exe" then it runs as before.I made a copy to another directory and installed that directory earlier in the PATH list. Normal operation was restored. I executed FC /B c:\b

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