rundll32.exe error Application Not Found in Windows XP

If your Windows XP computer programs are not launching as expected; with many icons opening an “Open With” window asking you to browse through your computer to find the program to run your software; or, it says ‘rundll32.exe is not found’, it can be pretty frustrating, especially if everything had be ‘working fine’ just prior to this error message.

Well, the solution is often a corrupt registry.  Prior to attempting to complete the steps below, be sure to scan your PC for Viruses and/or Malware.  If you cannot even do that first, then run the fix below and immediately scan afterwards to cover all bases.

The following will correct the error in your registry:

1-     Click Start > Run… this will open a run command window

2-     Type notepad and hit enter to launch notepad… if it will still not open, reboot in safe mode (reboot > F8 > Safe Mode) and try it again.

3-     Copy or type all the text blow into notepad:

Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\exefile\shell\open\command]
@=”\”%1\” %*”

4-     Save this file using File > Save As… save it to your desktop

a.       use this as the File Name – fix.reg

b.      use this as the Save As Type – All Files

5-     Double-click this new fix.reg file on your desktop

a.       Click YES to confirm the registry change

6-     Reboot your PC .

7-     Try to launch a program… if this was the error, you should be fine and working again.

8-     Scan for viruses and malware as a final complete cleaning step

 

You should be good-2-go now. 

 

Cheers!

fdJim

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