RENAME function not renaming in batch script - batch-file

Question

EDIT: I have updated this post to include the entire script.
EDIT: While not ideal, this is meant to be an automation of a fix provided by the company that makes the software.
I have a batch file that I am running as Administrator.
I am running a batch file based on the file system input by the user.
One of the first commands renames a file.
If I execute this command on its own, from an elevated command prompt, it renames the file.
When I nest the command inside the IF statement, it doesn't rename the file.
I have commented out all of the other lines to simply rename the file if the user enters "1".
I have tried encapsulating the file path and file each individually within quotes, which I shouldn't need, and still do not get it to rename the file.
I am running the batch script as Admin.
#echo off
setlocal EnableDelayedExpansion
if "%$ecbId%" == "" (
echo Welcome to the ADaPT
echo Choose '1' for 32 bit
echo Choose '2' for 64 bit
echo Type anything else to abort.
echo.
set "UserChoice=abort"
set /P "UserChoice=Type your choice: "
if "!UserChoice!"=="1" (
echo Executing 32 bit sequence...
echo Regsvr32.exe /u C:\Windows\System32\MSCOMCTL.OCX
echo REN C:\Windows\System32\MSCOMCTL.OCX MSCOMCTL.bak
xcopy C:\install\MSCOMCTL.OCX C:\Windows\System32 folder
Regsvr32.exe C:\Windows\System32\MSCOMCTL.OCX
Regsvr32.exe /u C:\Windows\System32\MSCOMCTL.OCX
del "C:\Windows\System32\ MSCOMCTL.OCX"
echo REN "C:\Windows\System32\MSCOMCTL.bak" "MSCOMCTL.OCX"
Recho Regsvr32.exe C:\Windows\System32\MSCOMCTL.OCX
shutdown.exe /r /t 00
)
if "!UserChoice!"=="2" (
echo Regsvr32.exe /u C:\Windows\SYSWOW64\MSCOMCTL.OCX
echo REN "C:\Windows\SYSWOW64\MSCOMCTL.OCX" "MSCOMCTL.bak"
xcopy C:\install\MSCOMCTL.OCX C:\Windows\SYSWOW64 folder
Regsvr32.exe C:\Windows\SYSWOW64\MSCOMCTL.OCX
Regsvr32.exe /u C:\Windows\SYSWOW64\MSCOMCTL.OCX
del "C:\Windows\SYSWOW64\ MSCOMCTL.OCX"
echo REN "C:\Windows\SYSWOW64\MSCOMCTL.bak" "MSCOMCTL.OCX"
echo Regsvr32.exe C:\Windows\SYSWOW64\MSCOMCTL.OCX
REM... shutdown.exe /r /t 00
)
if not "!UserChoice!"=="1" (
echo toto3
if not "!UserChoice!"=="2" (
echo toto4
echo Unknown input ... Aborting script
endlocal
exit /B 400
)
)
)
endlocal

Answer 1

I have simplified your entire script structure so as not to require parenthesised blocks, or the need to delay expansion:
#Echo Off
If Defined $ecbId GoTo :EOF
Echo Welcome to the ADaPT
Choice /C CQ /M "Continue or Quit"
If ErrorLevel 2 GoTo :EOF
Set "Dest=TEM32"
Set PROCESSOR_ARCHITE|Find "64">Nul&&(Set Dest=WOW64)
Set "Dest=%SYSTEMROOT%\SYS%Dest%"
Echo Executing sequence . . .
RegSvr32 /U "%Dest%\MSCOMCTL.OCX"
Rem To backup and replace MSCOMCTL.OCX:
Rem Uncomment the next three unRemarked lines
Rem and comment the next three unRemarked lines below them.
::Del /A /F "MSCOMCTL.bak" 2>Nul
::Ren "%Dest%\MSCOMCTL.OCX" "MSCOMCTL.bak"
::XCopy "C:\install\MSCOMCTL.OCX" "%Dest%"
Rem To recover MSCOMCTL.OCX from the backup:
Rem Comment the next three unRemarked lines
Rem and uncomment the previous three unRemarked lines above them.
If Not Exist "MSCOMCTL.bak" RegSvr32 "%Dest%\MSCOMCTL.OCX" & GoTo :EOF
Del /A /F "%Dest%\MSCOMCTL.OCX"
Ren "%Dest%\MSCOMCTL.bak" "MSCOMCTL.OCX"
RegSvr32 "%Dest%\MSCOMCTL.OCX"
ShutDown /R /T 0 /D P:2:4
Notes:It is probably safe to delete lines 3 and empty line 4, I left them in only because no explanation was provided as to the purpose of the %$ecbId% variable value comparison.I have added Remarks for toggling the script for the backup or recovery methods, but not knowingly altered any of your command sequence, (I have however added the /A and /F options with Del, just in case, and included the /D option with ShutDown to ensure that the logs show it as a planned shutdown event).