Missing Environment Variables

Just run the Petzold Environment Variables test and seems there are a couple that probably are missing in ReactOS and/or different than their Window's counterparts:

Missing (Appears in Windows but not in Ros):

ClusterLog -> C:\Windows\Cluster\cluster.log

FP_NO_HOST_CHECK -> No

SESSIONNAME -> Console

Different (Different values in Windows and Ros):

TEMP:
— Windows: C:\DOCUME~1\ADMINI~1\CONFIG~1\Temp
— ReactOS: C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp
(Same happens with the TMP envvariable)

PATHEXT: Windows add some extra bits here.
— Windows :.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH
— Reactos just to: .COM;.EXE;.BAT;.CMD

Extra:

ReactOS shows a PROMPT env variable which doesn't seem to be set by Windows.

Dubtious:

Path: ReactOS adds a C:\ReactOS\bin at the beginning of the env (aside of that both variables are exactly the same. Not sure if it is safer to have the C:\ReactOS\bin at the end of the variable to avoid any precedence issues)