Write in hosts

[alibabavl64]

I use this:

RequestExecutionLevel admin
......


......


ExecWait "$INSTDIR\x.bat"



In x.bat i have

IF EXIST %windir%\SYSTEM32\DRIVERS\ETC\HOSTS*.* ATTRIB +A -H -R -S %windir%\SYSTEM32\DRIVERS\ETC\HOSTS*.* > NUL

echo 127.0.0.1 something.com >> %windir%\system32\drivers\etc\hosts


....


I tried on XP. work OK.

In Win7-10/64 work random.
Most more didn't work.

I tried run installer (in installer exist command RequestExecutionLevel admin). never ask for rights.
I tried too RunAsAdministrator (rightclik)..

If i try "Runn as administrator on Total commander, go to hosts, F4-edit, made the change, save, work correctly.

Where is the misjate?

Thank you