Skip navigation

JSI Tip 1623. Some 32bit programs are missing from the Add/Remove Programs display?

When you use Control Panel / Add/Remove Programs, some 32bit programs are missing from the display?

The display is built by retrieving:


Only entries with a Value Name of DisplayName are supposed to be listed.

Unfortuneatly, any DisplayName text string that exceeds 64 characters is erroneously ignored.

You can manually inspect and fix the errant entries, or you can run undn.bat.

undn.bat uses standard commands and contains:

@echo off
set fix=n
regedit /e %temp%\undnout.reg HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
if exist %temp%\undnin.reg del /q %temp%\undnin.reg 
for /f "Tokens=1* Delims

" %%i in (%temp%\undnout.reg) do call :parse "%%i" %%j if %fix%

"n" set fix=&goto end regedit /s %temp%\undnin.reg endlocal goto end :parse set str1=%1 set str2=%2 if %str1%

"REGEDIT4" @echo REGEDIT4>%temp%\undnin.reg & goto end set str1=%str1:"=% if "%str1:~0,1%"

"\[" set key=%str1%&goto end if not "%str1%"

"DisplayName" goto end set work=%str2:~0,63%!!! set work=%work:"!!!="% set work=%work:!!!="% set name=%work% if %name%

%str2% goto end set fix=y @echo %key%>>%temp%\undnin.reg @echo "%str1%"=%name%>>%temp%\undnin.reg :end

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.