Applications from the pre-64-bit era are most unlikely to even know of SysWOW64.
32 Bit Applications never look at SysWOW64,
but every time they attempt to access System32 they never get there,
because 64 Bit Windows is a con artist and it gives them SysWOW64 because this is where the 32 bit DLL's have been evicted to,
and the System32 is now occupied solely by 64 bit DLL squatters.
64 bit stuff in sytem32, and 32 bit stuff in sysWOW64.
You aint seen nothing yet - wait for M.S. to roll out 128 bit code.
N.B. 32 bit applications CAN see 64 bit DLL's if they look at SysNative,
but this is a "magic spell" - a special re-direction that does not work for 64 bit applications,
and 32 bit applications must know the exact term - they will never know about it via searching for "Sys*"
I have learnt much from replies to my topic at
http://forum.piriform.com/index.php?showtopic=32083
I have raised my concerns about 32 bit CCleaner being deceived by Windows deception into doing damage, but not yet received response, at
http://forum.piriform.com/index.php?showtopic=32222
To all the above I will now add that I find TREESIZE is able to show that System32 is much larger than SysWOW64,
and RevoUninstaller claims to work well on 64 bit systems,
BUT TO MY SURPRISE,
I cannot find a choice of 32 bit or 64 bit downloads for either.
I assume that 64 bit applications cannot be used in 32 bit hardware,
so assume both of these are 32 bit applications with the special ability to avoid 64 bit O.S. con tricks,
and presumably see and/or zap 64 bit DLL's via SysNative.
I believe 64 bit CCleaner can see and therefore delete items in both system32 and SysWOW64,
and it needs to process SysWOW64 to deal with junk from stray 32 bit applications.
I do not know what it does in this respect.
@ WinApp2.ini - Sorry my friend, but you have a big job ahead.
I gave up after counting more than 40 FileKey24 items that zap bits out of System32, such as
FileKey24=%windir%\System32\config|SAM.jv16pt_bak.LOG2
But nowhere do I see a SysWOW64.
I have also spotted two off DetectFile=%WinDir%\System32
The first enhancement we need is to repeat all instances of System32 with SysWOW64
The second enhancement we need before release is to ensure that residues from an uninstalled 32 bit application do not damage its 64 bit upgrade (and vice versa),
and that may require extra detection capabilities.
Have a very nice day ! ! ! !