Cause: The downloaded dotnet(.net) program has 32-bit memory limits, causing memory overflow exceptions. The UE5 only runs on 64-bit machines with a minimum of 8GB of memory.
Inspection method:
1,run “where.exe dotnet” on CLI to fand the file location of the dotnet Program." C:\ program Files (x86)\dotnet\dotnet.exe " in first line indicates that the 32-bit dotnet program may be used.
- Run the following two commands on the CLI
cd C:\Program Files (x86)\dotnet\
dotnet --info
- If “Architecture: X86” is displayed, the 32-bit dotnet program is used
Solution: Uninstall the original dotnet Program, download and install the 64-bit version of dotnet. If the first line of “where.exe dotnet” is still in the X86 folder, delete it all and replace it with the contents in C:\Program Files\dotnet\
Binding IntelliSense data… 100%
Writing project files…
Writing project files… 33%
Unhandled exception: System.OutOfMemoryException: Exception of type ‘System.OutOfMemoryException’ was thrown.
at System.Text.StringBuilder.ToString()
at UnrealBuildTool.VCProjectFile.WriteProjectFile(List1 InPlatforms, List1 InConfigurations, PlatformProjectGeneratorCollection PlatformProjectGenerators, ILogger Logger) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\ProjectFiles\VisualStudio\VCProject.cs:line 1381
at UnrealBuildTool.ProjectFileGenerator.WriteProjectFiles(PlatformProjectGeneratorCollection PlatformProjectGenerators, ILogger Logger) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\ProjectFiles\ProjectFileGenerator.cs:line 2812
at UnrealBuildTool.VCProjectFileGenerator.WriteProjectFiles(PlatformProjectGeneratorCollection PlatformProjectGenerators, ILogger Logger) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\ProjectFiles\VisualStudio\VCProjectFileGenerator.cs:line 480
at UnrealBuildTool.ProjectFileGenerator.GenerateProjectFiles(PlatformProjectGeneratorCollection PlatformProjectGenerators, String[] Arguments, ILogger Logger) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\ProjectFiles\ProjectFileGenerator.cs:line 1176
at UnrealBuildTool.GenerateProjectFilesMode.Execute(CommandLineArguments Arguments, ILogger Logger) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Modes\GenerateProjectFilesMode.cs:line 233
at UnrealBuildTool.UnrealBuildTool.Main(String[] ArgumentsArray) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.cs:line 648