Keep on your reading to find the answers.
How to Fix the Error Not a Valid Win32 program?
Before proceeding with the solutions, c’mon check the program is compatible with your version of Windows.

Method 1.
Check Version and Build Number).
The error not a valid Win32 app may be because of the corrupt file during downloading.

And then run it and check whether the error not a valid Win32 software is solved.
If it is not effective, try other solutions.
Now, here is the tutorial.
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Then trigger the program and check whether the error that .exe is not a valid Win32 utility.
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In his post, we will walk you through an easy and quick guide.
Method 3.
Check Bad File
And file can be changed or renamed as the .exe file.
Otherwise, the file would not be executable and you may encounter the error not a valid Win32 utility.
If you come across the same error, try these solutions.