vb.net process start Application not show up

Question

i face an error when using process.start in windows 10, the function is working in my windows 7, but not working in windows 10, the code of the button as below

Dim PDFFilePath As String = "C:\1.pdf"
Process.Start(PDFFilePath)

i had recorded the short video

Windows 10 Video

https://sendvid.com/i8w8q8nm

Windows 7 Video

hhttps://sendvid.com/as3lkm1g

From the task manager, i can see that process is started, but i cant found the windows from my screen

Answer 1

Windows 10 uses it's app by default to read pdfs.

Change the default program for pdfs to acroboat reader or specify

Dim PDFFilePath As String = "C:\1.pdf"
Dim adobeAcrobatLocation as String = "..wherever.."
Process.Start(adobeAcrobatLocation, PDFFilePath)