Can't launch this app at all.

[Asag321]

On Widnows 11 I can't start this app.

When I try to launch it I'm getting error:

You must install or update .NET to run this application and I have it installed.

[CBLee1978]

Same here. I tried the standalone zip and the installer exe. Both were EVEMon v5.0.0 prev2. Both failed to launch with "You must install or update .NET to run this application and I have it installed." on Win11. Viewing the details shows the following info:

Required: 'Microsoft.AspNetCore.App', version '8.0.0' (x64)

I successfully installed .NET using the in-program "Download it now" link, but also tried downloading the .NET installer straight from Microsoft.

Additionally, I have tried starting EVEMon with admin rights and have tried installing/running it from multiple locations (C: drive, D: non-system drive, even from an external USB 3.1 SSD).

EVEMon still fails to start. I may try an older version until (and if) this is resolved.

System:
Intel Core i9 14900
128GB DDR5 7800MHz SDRAM
MSI Godlike Z790 Max
GeForce RTX 4090
4x 2TB NVMe SDDs RAID0
Windows 11 x64 (updated to Dec. '24)

[CBLee1978]

SOLVED

Got it to work. EVEMon allows you directly download the .NET Runtime v8.0.11, but you also need the ASP.NET Core Runtime. Apparently, Microsoft does not include ASP.NET with .NET Framework anymore. You must download and install it separately. This applies to version 5.0.0 Preview 1 and later versions of EVEMon (any versions after the switch to .NET 8). Direct links to both are below.

Install 1st (.NET Desktop Runtime 8.0.11):
https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/runtime-desktop-8.0.11-windows-x64-installer

Install 2nd (ASP.NET Core Runtime 8.0.11):
https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/runtime-aspnetcore-8.0.11-windows-x64-installer

Hope this helps.

@mgoeppner I would suggest a much more conspicuous note regarding this dependancy requirement to v5.0.0 Preview 1 and later releases. Some may not have the option to automatically install optional updates enabled in Windows Updates (which includes the .NET 8 & ASP.NET 8 runtimes), as was my case.