.net core won't let launchbox open. I've downloaded the correct version and everything

[launchboxhelpp]

I'm on a microsoft surface pro with windows 10. Before Launchbox always opened perfect, never any problems. Now it always says it needs a .net core. I've downloaded the correct one (x64) many times but nothing has changed. Please someone help me with this issue

[faeran]

Give this one a try:

https://dotnet.microsoft.com/download/dotnet/3.1

Make sure to download and install the .NET Desktop Runtime 3.1.19 (x64 version) - (the middle of the right column)

Also, make sure that your Windows is up-to-date.

[C-Beats]

After installing that make sure to restart your computer. If it still doesn't work, open command prompt as administrator and type in "sfc /scannow" (without the quotes) and let that run and then restart your computer and try one more time. We've seen some of the .NET runtime files get corrupted and that process should identify and correct those issues for you.

[launchboxhelpp]

thank you both for your replies. I'm on a microsoft surface pro 5/2017 with windows 10 fully updated. I tried everything you both told me many times and there has been no change. Please help me out with this problem. Launchbox worked without a problem just a  couple of months ago. If I can't recover launchbox do you think you can help me find another launcher for my retroarch game? There's a game that took me forever to emulate and that I've come to love. I'm sorry for the inconvenience. 

[MadCoder]

HOW TO SOLVE
This assumes you've installed the latest  .NET core runtimes or fresh Launchbox install or update.

First, ensure the .net core path is properly listed within your systems path variables. To add or check system paths: Press Windows Key + R and enter "SystemPropertiesAdvanced.exe" next select Environment Variables.

There you should see the path listed. Any OS version prior to 8.1 should have an entry like so "C:\Program Files\dotnet" otherwise x32 systems will be listed as "C:\Program Files (x86)\dotnet"

If you've installed the latest version .Net Core (6.0.9 as of this posting) you will see subset of versioning folders located within the "C:\Program Files\dotnet\host\fxr" folder. More than likely there will be no files within the 6.0.9 folder. Copy the "Hostfx.dll" file from the 6.0.6 folder and place it in the empty 6.0.9 folder and that will resolve the consistent "Install .net core ..." messagebox allowing Launchbox to properly load.

Launch Launchbox and enjoy

 

Edited October 11, 2022 by MadCoder