fast-actions/Setup .NET Fast

Download .NET SDK and Runtime with optimized performance

Trust Signals

name	description	required	default
sdk-version	.NET SDK version(s) to install. Supports single version, comma-separated (10.x, 10.x.x, 9.0.0), or YAML array. Use keywords: "latest" (newest), "lts" (Long-Term Support), "sts" (Standard Term Support). Wildcards can be two-part (10.x = 10.x.x) or three-part (10.x.x). Preview versions are supported (e.g., 9.0.100-preview.7). Takes precedence over global.json.	no	—
runtime-version	.NET Runtime version(s) to install. Supports single version, comma-separated (8.0.0, 7.x, 7.x.x), or YAML array. Wildcards can be two-part (7.x = 7.x.x) or three-part (7.x.x). Use keywords: "latest", "lts", "sts". Preview versions are supported (e.g., 9.0.0-preview.7).	no	—
aspnetcore-version	ASP.NET Core Runtime version(s) to install. Supports single version, comma-separated (8.0.0, 7.x, 7.x.x), or YAML array. Wildcards can be two-part (7.x = 7.x.x) or three-part (7.x.x). Use keywords: "latest", "lts", "sts". Preview versions are supported (e.g., 9.0.0-preview.7).	no	—
global-json	Path to global.json file for SDK version resolution. Defaults to ./global.json in workspace root. Only affects SDK installations.	no	""
cache	Enable unified caching of .NET installations. Speeds up subsequent runs when the same versions are requested. Set to false to disable.	no	true
allow-preview	Allow preview releases when using keywords (latest, lts, sts). When true, preview releases (support-phase: preview) will be included. When false (default), only stable releases are considered.	no	false

name	description
dotnet-version	The installed .NET version
dotnet-path	Path to the installed .NET directory
cache-hit	Whether all requested versions were restored from the unified cache (true) or any were downloaded (false)