diff --git a/Cargo.lock b/Cargo.lock
index 66395e78f..ad081ba42 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -145,6 +145,12 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "bumpalo"
+version = "3.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "572f695136211188308f16ad2ca5c851a712c464060ae6974944458eb83880ba"
+
 [[package]]
 name = "bytemuck"
 version = "1.12.3"
@@ -243,6 +249,12 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "cfg_aliases"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd16c4719339c4530435d38e511904438d07cce7950afa3718a84ac36c10e89e"
+
 [[package]]
 name = "clap"
 version = "3.2.23"
@@ -1256,6 +1268,15 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8eaf4bc02d17cbdd7ff4c7438cafcdf7fb9a4613313ad11b4f8fefe7d3fa0130"
 
+[[package]]
+name = "js-sys"
+version = "0.3.60"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49409df3e3bf0856b916e2ceaca09ee28e6871cf7d9ce97a692cacfdb2a25a47"
+dependencies = [
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "json-patch"
 version = "0.2.6"
@@ -1402,26 +1423,6 @@ dependencies = [
  "adler",
 ]
 
-[[package]]
-name = "native-dialog"
-version = "0.6.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ab637f328b31bd0855c43bd38a4a4455e74324d9e74e0aac6a803422f43abc6"
-dependencies = [
- "block",
- "cocoa",
- "dirs-next",
- "objc",
- "objc-foundation",
- "objc_id",
- "once_cell",
- "raw-window-handle 0.4.3",
- "thiserror",
- "wfd",
- "which",
- "winapi",
-]
-
 [[package]]
 name = "ndk"
 version = "0.6.0"
@@ -1578,6 +1579,16 @@ version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "86f0b0d4bf799edbc74508c1e8bf170ff5f41238e5f8225603ca7caaae2b7860"
 
+[[package]]
+name = "open"
+version = "3.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2078c0039e6a54a0c42c28faa984e115fb4c2d5bf2208f77d1961002df8576f8"
+dependencies = [
+ "pathdiff",
+ "windows-sys",
+]
+
 [[package]]
 name = "os_pipe"
 version = "1.1.1"
@@ -1654,6 +1665,12 @@ version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b1de2e551fb905ac83f73f7aedf2f0cb4a0da7e35efa24a202a936269f1f18e1"
 
+[[package]]
+name = "pathdiff"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8835116a5c179084a830efb3adc117ab007512b535bc1a21c991d3b32a6b44dd"
+
 [[package]]
 name = "percent-encoding"
 version = "2.2.0"
@@ -1980,15 +1997,6 @@ dependencies = [
  "rand_core 0.5.1",
 ]
 
-[[package]]
-name = "raw-window-handle"
-version = "0.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b800beb9b6e7d2df1fe337c9e3d04e3af22a124460fb4c30fcc22c9117cefb41"
-dependencies = [
- "cty",
-]
-
 [[package]]
 name = "raw-window-handle"
 version = "0.5.0"
@@ -2053,6 +2061,30 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "rfd"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0149778bd99b6959285b0933288206090c50e2327f47a9c463bfdbf45c8823ea"
+dependencies = [
+ "block",
+ "dispatch",
+ "glib-sys",
+ "gobject-sys",
+ "gtk-sys",
+ "js-sys",
+ "lazy_static",
+ "log",
+ "objc",
+ "objc-foundation",
+ "objc_id",
+ "raw-window-handle",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "windows 0.37.0",
+]
+
 [[package]]
 name = "rustc_version"
 version = "0.3.3"
@@ -2302,9 +2334,10 @@ dependencies = [
 name = "slimevr_ui"
 version = "0.0.0"
 dependencies = [
+ "cfg_aliases",
  "clap-verbosity-flag",
  "log",
- "native-dialog",
+ "open",
  "pretty_env_logger",
  "rand 0.8.5",
  "serde",
@@ -2312,7 +2345,10 @@ dependencies = [
  "tauri",
  "tauri-build",
  "tauri-plugin-window-state",
+ "tempfile",
+ "which",
  "win32job",
+ "winreg",
 ]
 
 [[package]]
@@ -2469,7 +2505,7 @@ dependencies = [
  "parking_lot",
  "paste",
  "png",
- "raw-window-handle 0.5.0",
+ "raw-window-handle",
  "scopeguard",
  "serde",
  "unicode-segmentation",
@@ -2515,8 +2551,9 @@ dependencies = [
  "os_pipe",
  "percent-encoding",
  "rand 0.8.5",
- "raw-window-handle 0.5.0",
+ "raw-window-handle",
  "regex",
+ "rfd",
  "semver 1.0.14",
  "serde",
  "serde_json",
@@ -2617,7 +2654,7 @@ dependencies = [
  "http",
  "http-range",
  "rand 0.8.5",
- "raw-window-handle 0.5.0",
+ "raw-window-handle",
  "serde",
  "serde_json",
  "tauri-utils",
@@ -2637,7 +2674,7 @@ dependencies = [
  "gtk",
  "percent-encoding",
  "rand 0.8.5",
- "raw-window-handle 0.5.0",
+ "raw-window-handle",
  "tauri-runtime",
  "tauri-utils",
  "uuid 1.2.2",
@@ -3004,6 +3041,82 @@ version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eaf9f5aceeec8be17c128b2e93e031fb8a4d469bb9c4ae2d7dc1888b26887268"
+dependencies = [
+ "cfg-if",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c8ffb332579b0557b52d268b91feab8df3615f265d5270fec2a8c95b17c1142"
+dependencies = [
+ "bumpalo",
+ "log",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23639446165ca5a5de86ae1d8896b737ae80319560fbaa4c2887b7da6e7ebd7d"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "052be0f94026e6cbc75cdefc9bae13fd6052cdcaf532fa6c45e7ae33a1e6c810"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "07bc0c051dc5f23e307b13285f9d75df86bfdf816c5721e573dec1f9b8aa193c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.83"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1c38c045535d93ec4f0b4defec448e4291638ee608530863b1e2ba115d4fff7f"
+
+[[package]]
+name = "web-sys"
+version = "0.3.60"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bcda906d8be16e728fd5adc5b729afad4e444e106ab28cd1c7256e54fa61510f"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "webkit2gtk"
 version = "0.18.2"
@@ -3089,16 +3202,6 @@ dependencies = [
  "windows-metadata",
 ]
 
-[[package]]
-name = "wfd"
-version = "0.1.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e713040b67aae5bf1a0ae3e1ebba8cc29ab2b90da9aa1bff6e09031a8a41d7a8"
-dependencies = [
- "libc",
- "winapi",
-]
-
 [[package]]
 name = "which"
 version = "4.3.0"
@@ -3164,6 +3267,19 @@ dependencies = [
  "windows_x86_64_msvc 0.32.0",
 ]
 
+[[package]]
+name = "windows"
+version = "0.37.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57b543186b344cc61c85b5aab0d2e3adf4e0f99bc076eff9aa5927bcc0b8a647"
+dependencies = [
+ "windows_aarch64_msvc 0.37.0",
+ "windows_i686_gnu 0.37.0",
+ "windows_i686_msvc 0.37.0",
+ "windows_x86_64_gnu 0.37.0",
+ "windows_x86_64_msvc 0.37.0",
+]
+
 [[package]]
 name = "windows"
 version = "0.39.0"
@@ -3237,6 +3353,12 @@ version = "0.32.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d8e92753b1c443191654ec532f14c199742964a061be25d77d7a96f09db20bf5"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.37.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2623277cb2d1c216ba3b578c0f3cf9cdebeddb6e66b1b218bb33596ea7769c3a"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.39.0"
@@ -3255,6 +3377,12 @@ version = "0.32.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a711c68811799e017b6038e0922cb27a5e2f43a2ddb609fe0b6f3eeda9de615"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.37.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3925fd0b0b804730d44d4b6278c50f9699703ec49bcd628020f46f4ba07d9e1"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.39.0"
@@ -3273,6 +3401,12 @@ version = "0.32.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "146c11bb1a02615db74680b32a68e2d61f553cc24c4eb5b4ca10311740e44172"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.37.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce907ac74fe331b524c1298683efbf598bb031bc84d5e274db2083696d07c57c"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.39.0"
@@ -3291,6 +3425,12 @@ version = "0.32.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c912b12f7454c6620635bbff3450962753834be2a594819bd5e945af18ec64bc"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.37.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2babfba0828f2e6b32457d5341427dcbb577ceef556273229959ac23a10af33d"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.39.0"
@@ -3315,6 +3455,12 @@ version = "0.32.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "504a2476202769977a040c6364301a3f65d0cc9e3fb08600b2bda150a0488316"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.37.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f4dd6dc7df2d84cf7b33822ed5b86318fb1781948e9663bacd047fc9dd52259d"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.39.0"
@@ -3327,6 +3473,15 @@ version = "0.42.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f40009d85759725a34da6d89a94e63d7bdc50a862acf0dbc7c8e488f1edcb6f5"
 
+[[package]]
+name = "winreg"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "80d0f4e272c85def139476380b12f9ac60926689dd2e01d4923222f40580869d"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "winres"
 version = "0.1.12"
diff --git a/gui/package.json b/gui/package.json
index a07b3da74..10f01f1b8 100644
--- a/gui/package.json
+++ b/gui/package.json
@@ -40,7 +40,8 @@
     "lint": "eslint src/**/*.{js,jsx,ts,tsx,json}",
     "lint:fix": "eslint --fix src/**/*.{js,jsx,ts,tsx,json}",
     "format": "prettier --write src/**/*.{js,jsx,ts,tsx,css,md,json} --config ./.prettierrc",
-    "preview-vite": "vite preview"
+    "preview-vite": "vite preview",
+    "javaversion-build": "javac src-tauri/src/JavaVersion.java"
   },
   "eslintConfig": {
     "extends": [
diff --git a/gui/src-tauri/Cargo.toml b/gui/src-tauri/Cargo.toml
index 2bc2b7d9c..cc1ac6ef4 100644
--- a/gui/src-tauri/Cargo.toml
+++ b/gui/src-tauri/Cargo.toml
@@ -22,17 +22,36 @@ custom-protocol = ["tauri/custom-protocol"]
 
 [build-dependencies]
 tauri-build = { version = "1.2", features = [] }
+cfg_aliases = "0.1"
 
 [dependencies]
 serde_json = "1"
 serde = { version = "1", features = ["derive"] }
-tauri = { version = "1.2", features = ["cli", "devtools", "fs-all", "path-all", "shell-execute", "window-close", "window-maximize", "window-minimize", "window-set-resizable", "window-set-title", "window-start-dragging", "window-unmaximize", "window-unminimize"] }
+tauri = { version = "1.2", features = [
+    "cli",
+    "devtools",
+    "dialog",
+    "fs-all",
+    "path-all",
+    "shell-execute",
+    "window-close",
+    "window-maximize",
+    "window-minimize",
+    "window-set-resizable",
+    "window-set-title",
+    "window-start-dragging",
+    "window-unmaximize",
+    "window-unminimize"
+] }
 pretty_env_logger = "0.4"
 log = "0.4"
 clap-verbosity-flag = "1"
 tauri-plugin-window-state = "0.1.0"
-native-dialog = "0.6.3"
 rand = "0.8.5"
+tempfile = "3"
+which = "4.3.0"
+open = "3"
 
 [target.'cfg(windows)'.dependencies]
 win32job = "1"
+winreg = "0.10.1"
diff --git a/gui/src-tauri/build.rs b/gui/src-tauri/build.rs
index c1ea37328..1ca8a194b 100644
--- a/gui/src-tauri/build.rs
+++ b/gui/src-tauri/build.rs
@@ -1,3 +1,9 @@
+use cfg_aliases::cfg_aliases;
+
 fn main() {
-	tauri_build::build()
+	tauri_build::build();
+	cfg_aliases! {
+		mobile: { any(target_os = "ios", target_os = "android") },
+		desktop: { not(any(target_os = "ios", target_os = "android")) }
+	}
 }
diff --git a/gui/src-tauri/src/JavaVersion.class b/gui/src-tauri/src/JavaVersion.class
new file mode 100644
index 000000000..046a27ae1
Binary files /dev/null and b/gui/src-tauri/src/JavaVersion.class differ
diff --git a/gui/src-tauri/src/JavaVersion.java b/gui/src-tauri/src/JavaVersion.java
new file mode 100644
index 000000000..29367f25d
--- /dev/null
+++ b/gui/src-tauri/src/JavaVersion.java
@@ -0,0 +1,8 @@
+public class JavaVersion {
+	
+	public static void main (String[] args)
+	{
+		var version = Runtime.version().version().get(0);
+		System.exit(version);
+	}
+}
diff --git a/gui/src-tauri/src/main.rs b/gui/src-tauri/src/main.rs
index 70007e005..d6b2acd46 100644
--- a/gui/src-tauri/src/main.rs
+++ b/gui/src-tauri/src/main.rs
@@ -1,20 +1,22 @@
-#![cfg_attr(
-	all(not(debug_assertions), windows),
-	windows_subsystem = "windows"
-)]
+#![cfg_attr(all(not(debug_assertions), windows), windows_subsystem = "windows")]
 use std::env;
+use std::ffi::{OsStr, OsString};
+use std::io::Write;
 use std::panic;
 use std::path::PathBuf;
+use std::process::{Child, Stdio};
+use std::str::FromStr;
 
 use clap::Parser;
 use clap_verbosity_flag::{InfoLevel, Verbosity};
-use native_dialog::{MessageDialog, MessageType};
-use rand::seq::SliceRandom;
-use rand::thread_rng;
-use tauri::api::clap;
-use tauri::api::process::Command;
+use rand::{seq::SliceRandom, thread_rng};
+use tauri::api::{clap, process::Command};
 use tauri::Manager;
+use tempfile::Builder;
+use which::which_all;
 
+/// It's an i32 because we check it through exit codes of the process
+const MINIMUM_JAVA_VERSION: i32 = 17;
 static POSSIBLE_TITLES: &[&str] = &[
 	"Panicking situation",
 	"looking for spatula",
@@ -35,47 +37,68 @@ struct Cli {
 }
 
 fn is_valid_path(path: &PathBuf) -> bool {
-	let java_folder = path.join("jre");
+	// Might need to be changed in the future, at least for linux
 	let server_path = path.join("slimevr.jar");
 
-	return java_folder.exists() && server_path.exists();
+	return server_path.exists();
 }
 
 fn get_launch_path(cli: Cli) -> Option<PathBuf> {
 	let mut path = cli.launch_from_path.unwrap_or_default();
-	if path.exists() && is_valid_path(&path) {
+	if is_valid_path(&path) {
 		return Some(path);
 	}
 
 	path = env::current_dir().unwrap();
-	if path.exists() && is_valid_path(&path) {
+	if is_valid_path(&path) {
 		return Some(path);
 	}
 
 	path = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
-	if path.exists() && is_valid_path(&path) {
+	if is_valid_path(&path) {
 		return Some(path);
 	}
 
 	None
 }
 
-fn show_error(text: &str) {
-	MessageDialog::new()
-		.set_title(&format!(
+fn spawn_java(java: &OsStr, java_version: &OsStr) -> std::io::Result<Child> {
+	std::process::Command::new(java)
+		.arg(java_version)
+		.stdin(Stdio::null())
+		.stderr(Stdio::null())
+		.stdout(Stdio::null())
+		.spawn()
+}
+
+#[cfg(desktop)]
+fn show_error(text: &str) -> bool {
+	use tauri::api::dialog::{
+		blocking::MessageDialogBuilder, MessageDialogButtons, MessageDialogKind,
+	};
+
+	MessageDialogBuilder::new(
+		format!(
 			"SlimeVR GUI crashed - {}",
 			POSSIBLE_TITLES.choose(&mut thread_rng()).unwrap()
-		))
-		.set_text(text)
-		.set_type(MessageType::Error)
-		.show_alert()
-		.unwrap();
+		),
+		text,
+	)
+	.buttons(MessageDialogButtons::Ok)
+	.kind(MessageDialogKind::Error)
+	.show()
+}
+
+#[cfg(mobile)]
+fn show_error(text: &str) -> bool {
+	// needs to do native stuff on mobile
+	false
 }
 
 fn main() {
 	// Make an error dialog box when panicking
 	panic::set_hook(Box::new(|panic_info| {
-		eprintln!("{}", panic_info);
+		println!("{}", panic_info);
 		show_error(&panic_info.to_string());
 	}));
 
@@ -90,6 +113,7 @@ fn main() {
 	}
 
 	// Ensure child processes die when spawned on windows
+	// and then check for WebView2's existence
 	#[cfg(windows)]
 	{
 		use win32job::{ExtendedLimitInfo, Job};
@@ -103,6 +127,23 @@ fn main() {
 		// We don't do anything with the job anymore, but we shouldn't drop it because that would
 		// terminate our process tree. So we intentionally leak it instead.
 		std::mem::forget(job);
+
+		if !webview2_exists() {
+			// This makes a dialog appear which let's you press Ok or Cancel
+			// If you press Ok it will open the SlimeVR installer documentation
+			use tauri::api::dialog::{
+				blocking::MessageDialogBuilder, MessageDialogButtons, MessageDialogKind,
+			};
+
+			let confirm = MessageDialogBuilder::new("SlimeVR", "Couldn't find WebView2 installed. You can install it with the SlimeVR installer")
+				.buttons(MessageDialogButtons::OkCancel)
+				.kind(MessageDialogKind::Error)
+				.show();
+			if confirm {
+				open::that("https://docs.slimevr.dev/server-setup/installing-and-connecting.html#install-the-latest-slimevr-installer").unwrap();
+			}
+			return;
+		}
 	}
 
 	// Spawn server process
@@ -111,13 +152,22 @@ fn main() {
 	let stdout_recv = if let Some(p) = run_path {
 		log::info!("Server found on path: {}", p.to_str().unwrap());
 
-		let java_folder = p.join("jre");
-		let (recv, _child) =
-			Command::new(java_folder.join("bin/java").to_str().unwrap())
-				.current_dir(p)
-				.args(["-Xmx512M", "-jar", "slimevr.jar", "--no-gui"])
-				.spawn()
-				.expect("Unable to start the server jar");
+		// Check if any Java already installed is compatible
+		let jre = p.join("jre/bin/java");
+		let java_bin = jre
+			.exists()
+			.then(|| jre.into_os_string())
+			.or_else(|| valid_java_paths().first().map(|x| x.0.to_owned()));
+		if let None = java_bin {
+			show_error(&format!("Couldn't find a compatible Java version, please download Java {} or higher", MINIMUM_JAVA_VERSION));
+			return;
+		};
+
+		let (recv, _child) = Command::new(java_bin.unwrap().to_string_lossy())
+			.current_dir(p)
+			.args(["-Xmx512M", "-jar", "slimevr.jar", "--no-gui"])
+			.spawn()
+			.expect("Unable to start the server jar");
 		Some(recv)
 	} else {
 		log::warn!("No server found. We will not start the server.");
@@ -157,3 +207,82 @@ fn main() {
 		.run(tauri::generate_context!())
 		.expect("error while running tauri application");
 }
+
+#[cfg(windows)]
+/// Check if WebView2 exists
+fn webview2_exists() -> bool {
+	use winreg::enums::*;
+	use winreg::RegKey;
+
+	// First on the machine itself
+	let machine: Option<String> = RegKey::predef(HKEY_LOCAL_MACHINE)
+		.open_subkey(r"SOFTWARE\WOW6432Node\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}")
+		.map(|r| r.get_value("pv").ok()).ok().flatten();
+	let mut exists = false;
+	if let Some(version) = machine {
+		exists = version.split('.').any(|x| x != "0");
+	}
+	// Then in the current user
+	if !exists {
+		let user: Option<String> = RegKey::predef(HKEY_CURRENT_USER)
+			.open_subkey(
+				r"Software\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}",
+			)
+			.map(|r| r.get_value("pv").ok())
+			.ok()
+			.flatten();
+		if let Some(version) = user {
+			exists = version.split('.').any(|x| x != "0");
+		}
+	}
+	exists
+}
+
+fn valid_java_paths() -> Vec<(OsString, i32)> {
+	let mut file = Builder::new()
+		.suffix(".class")
+		.tempfile()
+		.expect("Couldn't generate .class file");
+	file.write_all(include_bytes!("JavaVersion.class"))
+		.expect("Couldn't write to .class file");
+	let java_version = file.into_temp_path();
+
+	// Check if main Java is a supported version
+	let main_java = if let Ok(java_home) = std::env::var("JAVA_HOME") {
+		PathBuf::from(java_home).join("bin/java").into_os_string()
+	} else {
+		OsString::from_str("java").unwrap()
+	};
+	if let Some(main_child) = spawn_java(&main_java, java_version.as_os_str())
+		.expect("Couldn't spawn the main Java binary")
+		.wait()
+		.expect("Couldn't execute the main Java binary")
+		.code()
+	{
+		if main_child >= MINIMUM_JAVA_VERSION {
+			return vec![(main_java, main_child)];
+		}
+	}
+
+	// Otherwise check if anything else is a supported version
+	let mut childs = vec![];
+	for java in which_all("java").unwrap() {
+		let res = spawn_java(java.as_os_str(), java_version.as_os_str());
+
+		match res {
+			Ok(child) => childs.push((java.into_os_string(), child)),
+			Err(e) => println!("Error on trying to spawn a Java executable: {}", e),
+		}
+	}
+
+	childs
+		.into_iter()
+		.filter_map(|(p, mut c)| {
+			c.wait()
+				.expect("Failed on executing a Java executable")
+				.code()
+				.map(|code| (p, code))
+				.filter(|(_p, code)| *code >= MINIMUM_JAVA_VERSION)
+		})
+		.collect()
+}