Bile file output to text file not structured

wmic uses little-endian UTF-16 to display its output, while net users uses regular ANSI. In UTF-16, each character is two bytes long, and the standard ASCII character set is its regular ASCII value followed by a null byte.

When you run net users >> out.txt first, you force the output file to not be a UTF-16-encoded file, so the output of the wmic command is not displayed correctly. (Incidentally, if you simply tried to swap the order of the commands, you'd find that the net users command would appear as Chinese characters.)

The only way to get wmic output into ANSI is to run it through multiple for /f loops:

net users >> out.txt
for /f "delims=" %A in ('wmic qfe list full') do for /f "delims=" %B in ("%~A") do echo %B >> out.txt

Note that if you're putting this in a script, you need to use %%A and %%B instead of %A and %B.

wmic uses a different character set and has some additional CRLF in it's output. One way is to use a for loop:

from cmd

(net users && @for /F "delims=" %i in ('wmic qfe list full') do @echo(%i)>out.txt

In a batch-file

(net users && @for /F "delims=" %%i in ('wmic qfe list full') do @echo(%%i)>out.txt

I would use a different command completely, net.exe is not really needed for the results you need.

@%SystemRoot%\System32\wbem\WMIC.exe /Output:"out.txt" UserAccount Get Name
@%SystemRoot%\System32\wbem\WMIC.exe /Append:"out.txt" QFE List Full 1>NUL

You could even run just a single command, instead of two, which should considerably speed up the process too:

@(Echo /Output:"out.txt" UserAccount Get Name & Echo /Append:"out.txt" QFE List Full) | %SystemRoot%\System32\wbem\WMIC.exe 1>NUL