.NET Desktop Runtime 8.0.11 arm64 mandatory prerequisite was not correctly installed.
I tried on three different arm64 and had the same error.
Try downloading and installing the ARM64 version of the 8.0.11 Desktop runtime...
https://dotnet.microsoft.com/en-us/download/dotnet/8.0
Same problem. The Window 11 arm64 is on parallels on Mac 3m.
It is not fixed. Same issue with MS Surface 7 with ARM64. Installed runtime separately and PMPC won't install. It shouldn't try to install the runtime again if it exists, so definitely a bug. Log for runtime shows success (0), as the program already exists.
Same issue for me, created a thread here more than 1,5 months ago but no response.
I don't think they see ARM64 support as a priority, since they do respond to other bug reports.
Maybe Microsoft's move to Snapdragon on Surface laptops will help. Awesome speed and power efficiency that blows past any Intel-based laptops I've seen.
Patch My PC does not currently support ARM, but it is actively being worked on. We will be able to share further updates in due course, but currently only x86/x64 processors are supported.