I can’t open some of my icons cause it’s saying “not a valid Win32 application.

not a valid Win32 application


Follow the following steps to fix this issue from your computer.

Steps to fix “not a valid Win32 application” issue

To fix this issue, we are sharing with you 5 methods below. Please apply them one by one and check which one will work in your case. Please share your experience  by leaving a comment below.

1. Run SFC /scannow command

Sometimes, the system file gets corrupted. Please follow the below command to fix any system corruption issue.

  • Open the command prompt.
  • Type the following command SFC /scannow and then hit the enter button from your keyboard. It will start scanning your computer for scan & fix any system corruption issue.

2. Install Windows Shell

Sometimes, the Windows shell of the computer is not working properly, we suggest you to please re-register the shell.dll file. Follow the steps below to learn how to do it.

  • Press Window + R Key together to open up  the Run box.
  • Type the following command: regsvr32 / i SHELL32.DLL into the run box and then click on OK.

3. Scan your computer for virus infection

This may also occur due to a virus or malware infection. We suggest you to please scan your computer with a good antivirus or anti-malware program. We are suggesting some selected anti-malware software below, please check them out.

Download and run a scan of the following software.

4. Fix corrupted user profiles or create new

If the above methods did not work for you, then the last possibility is that your computer’s user profile got corrupted. Please try to reset your user profile by following the steps below: If the repair doesn’t work then we finally suggest you to please create a new user profile and transfer all the necessary  files into that.

5. Update Windows

If nothing works in your case, then we suggest that you update your Windows and make sure it is up-to-date to fix this issue.

5 thoughts on “How to Fix “not a valid Win32 application” with (Simple Steps)”

  1. Hi there please help me. All applications in my laptop shows not a valid win32 application. Even applications program that I stored in my laptop shows the same thing when I try to install. When I install from cd or memory card, the newly installed application still shows the same thing. Am using Windows 7. Please help, I can’t do anything with my laptop, it only boots then after that I can’t open anything again

    1. Hi, my name is Rajesh, I’ll help you with this matter.
      1) Could you please tell me, is it a laptop or desktop?
      2) From where are you trying to adjust your brightness? (Which setting are you doing)

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