If you are unsure about the OS version with which your executable file is compatible, then you can try different OS versions one-by-one. Finally, click on the ‘ OK’ button to apply the changes. Click the ‘ Down arrow’ to view the list of OS versions compatible with this executable file and select the OS version under which you want to run the file.In the Properties window, select the ‘ Compatibility’ tab and click on the ‘ Run this program in compatibility mode for’ option.Right click the file and select ‘ Properties’ from the options.Follow the steps given below to change the compatibility mode of your file: If this mode is not activated, then such a file has functionality problems, including the ‘not a valid Win32 application’ error. This feature is really helpful when that executable file has been designed to run on a specific version of Windows OS. Most executable files have compatibility mode in them, which allows you to run that file as if it was being run in an older version of Windows. Install File using Windows Compatible Mode If doing this solves the ‘not a valid Win32 application’ error, then great, otherwise, try the next solution. Right click the file which you want to run and choose ‘ Run as administrator’ option from the list.Therefore, you should try to run your file with admin rights. Sometimes files need administrator privileges to properly run themselves on a computer. Sometimes the website hosting the file has mistakenly uploaded a corrupted version of the file and changing the download source can solve your problem. If the second time again you get the ‘not a valid Win32 application’ error, then try downloading the file from another website or web page. Therefore, download the file one more time. Your web browser will show that the download has completed successfully and the file properties will show that its compatible with your OS version, but it’s possible that the file will be corrupted. Sometimes files get corrupted while they are being downloaded. Make sure the file is not corrupted – Download the File Once Again Most probably, your problem would have been fixed. That’s it, you should now try to run the file which was experiencing ‘not a valid Win32 application’ error. Click on the ‘ OK’ button to end the program.Wait for the program to finish the resetting process.Click on the ‘ OK’ button to allow the program to continue with its operation.Wait for the program to complete its operation.Run the downloaded Fi圎xec executable file.Download the Fi圎xec 32bit or Fi圎xec 64bit version, whichever is applicable in your case.You can get complete information about this tool from its official download page. Therefore, if any of these file extension associations are hijacked, missing or changed, then Fi圎xec tool will solve the problem. exe file extensions to the original Windows default. This program restores the association of. You can use this program to fix executable file associations for the. If no other solution is able to fix the ‘not a valid Win32 application’ error, then you can try a free tool named ‘Fi圎xec’. Again, run the file which was giving ‘not a valid Win32 application’ error. That’s it, you have re-registered the Shell32.dll file in your Windows. You will see the message that shell32.dll has been successfully registered in Register Server, click on the ‘ OK’ button.In the Command Prompt, make sure that the path is ‘ C:\Windows\System32’, then type the ‘ regsvr32 /i shell32.dll’ command and press the ‘ Enter’ button on your keyboard.In the search box, type ‘ cmd’ and choose ‘ Command Prompt’ from the search results.Follow the steps given below to re-register this DLL file: A lot of times the ‘not a valid Win32 application’ error is caused in Windows because Shell32.dll file has gotten corrupted. ![]() Sometimes, this DLL file gets corrupted or unregistered and to restore its normal operation you must re-register this file in Windows. Shell32.dll is a critical system file in the Windows which is used by the OS whenever you run any executable file. Please share your experience by leaving a comment below. Please apply them one by one and check which one will work in your case. ![]() To fix this issue, we are sharing with you 5 methods below. ![]() Steps to Fix “not a valid Win32 application” issue I can’t open some of my applications (icons), it’s saying “not a valid Win32 application”.įollow the following steps to fix this “not a valid Win32 application” issue in Windows.
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