Do not show "new app installed notification" doesn't work

I hate it when I double click a file and Windows 8.1 pops up a message saying I have other apps that can handle this extension.

I disabled this notification through GPEDIT.MSC, it works now when I open pics/docs/etc.... but let's say I install another app, for example, when I install Pale Moon Browser, the moment I launch it the popup still comes telling me I have other apps that can handle bla bla bla

anyone had any luck with this ?

I hate Windows 8 so much! Even with a start menu replacement, this ticks me off, it's crappy Wireless LAN manager sucks, its performance is less when I benchmarks my SSD

I don't know what to do. I can go back to 7, but I am trying to fix a few things if I could just to benefit from the UEFI boot mode as for installing 7, I have to enable legacy ROM which is much slower during boot.

 

What do you mean by "much slower"? On modern hardware there should be no meaningful difference. My Precision M3800 boots Windows 7 in about seven seconds, and the POST phase of the boot takes about the blink of an eye. So, time from pushing the power button to login screen is maybe 8 seconds total. I really don't need UEFI to make booting faster, and I sure as hell need no Windows 8 crap...