diff --git a/Cargo.lock b/Cargo.lock
index 28548ab84c..e9ca3591d0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1677,7 +1677,7 @@ dependencies = [
  "serde",
  "thiserror 1.0.64",
  "winapi",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -1767,7 +1767,7 @@ dependencies = [
  "tokio",
  "uuid",
  "winapi",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -1855,7 +1855,7 @@ dependencies = [
  "log",
  "napi_sym",
  "thiserror 1.0.64",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -1974,7 +1974,7 @@ dependencies = [
  "url",
  "webpki-root-certs",
  "winapi",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
  "x25519-dalek",
  "x509-parser",
  "yoke",
@@ -2174,7 +2174,7 @@ dependencies = [
  "uuid",
  "which 4.4.2",
  "winapi",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -2193,9 +2193,9 @@ dependencies = [
 
 [[package]]
 name = "deno_task_shell"
-version = "0.20.1"
+version = "0.20.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01e09966ce29f8d26b652a43355397e1df43b85759e7824196bf0ceaeaa9a2f4"
+checksum = "fa3763bc068e17b6d488fb73ecda463c13ef792b0a5288b6018bc2119becd635"
 dependencies = [
  "anyhow",
  "futures",
@@ -2206,6 +2206,7 @@ dependencies = [
  "path-dedot",
  "thiserror 1.0.64",
  "tokio",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -4558,7 +4559,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4979f22fdb869068da03c9f7528f8297c6fd2606bc3a4affe42e6a823fdb8da4"
 dependencies = [
  "cfg-if",
- "windows-targets 0.52.4",
+ "windows-targets 0.48.5",
 ]
 
 [[package]]
@@ -8623,7 +8624,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e48a53791691ab099e5e2ad123536d0fff50652600abaf43bbf952894110d0be"
 dependencies = [
  "windows-core",
- "windows-targets 0.52.4",
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -8632,7 +8633,7 @@ version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
 dependencies = [
- "windows-targets 0.52.4",
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -8650,7 +8651,16 @@ version = "0.52.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
 dependencies = [
- "windows-targets 0.52.4",
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.59.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
+dependencies = [
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -8670,17 +8680,18 @@ dependencies = [
 
 [[package]]
 name = "windows-targets"
-version = "0.52.4"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7dd37b7e5ab9018759f893a1952c9420d060016fc19a472b4bb20d1bdd694d1b"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
 dependencies = [
- "windows_aarch64_gnullvm 0.52.4",
- "windows_aarch64_msvc 0.52.4",
- "windows_i686_gnu 0.52.4",
- "windows_i686_msvc 0.52.4",
- "windows_x86_64_gnu 0.52.4",
- "windows_x86_64_gnullvm 0.52.4",
- "windows_x86_64_msvc 0.52.4",
+ "windows_aarch64_gnullvm 0.52.6",
+ "windows_aarch64_msvc 0.52.6",
+ "windows_i686_gnu 0.52.6",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc 0.52.6",
+ "windows_x86_64_gnu 0.52.6",
+ "windows_x86_64_gnullvm 0.52.6",
+ "windows_x86_64_msvc 0.52.6",
 ]
 
 [[package]]
@@ -8691,9 +8702,9 @@ checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
 
 [[package]]
 name = "windows_aarch64_gnullvm"
-version = "0.52.4"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bcf46cf4c365c6f2d1cc93ce535f2c8b244591df96ceee75d8e83deb70a9cac9"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
 
 [[package]]
 name = "windows_aarch64_msvc"
@@ -8703,9 +8714,9 @@ checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
 
 [[package]]
 name = "windows_aarch64_msvc"
-version = "0.52.4"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da9f259dd3bcf6990b55bffd094c4f7235817ba4ceebde8e6d11cd0c5633b675"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
 
 [[package]]
 name = "windows_i686_gnu"
@@ -8715,9 +8726,15 @@ checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
 
 [[package]]
 name = "windows_i686_gnu"
-version = "0.52.4"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b474d8268f99e0995f25b9f095bc7434632601028cf86590aea5c8a5cb7801d3"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
 
 [[package]]
 name = "windows_i686_msvc"
@@ -8727,9 +8744,9 @@ checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
 
 [[package]]
 name = "windows_i686_msvc"
-version = "0.52.4"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1515e9a29e5bed743cb4415a9ecf5dfca648ce85ee42e15873c3cd8610ff8e02"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
 
 [[package]]
 name = "windows_x86_64_gnu"
@@ -8739,9 +8756,9 @@ checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
 
 [[package]]
 name = "windows_x86_64_gnu"
-version = "0.52.4"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5eee091590e89cc02ad514ffe3ead9eb6b660aedca2183455434b93546371a03"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
 
 [[package]]
 name = "windows_x86_64_gnullvm"
@@ -8751,9 +8768,9 @@ checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
 
 [[package]]
 name = "windows_x86_64_gnullvm"
-version = "0.52.4"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77ca79f2451b49fa9e2af39f0747fe999fcda4f5e241b2898624dca97a1f2177"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
 
 [[package]]
 name = "windows_x86_64_msvc"
@@ -8763,9 +8780,9 @@ checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
 
 [[package]]
 name = "windows_x86_64_msvc"
-version = "0.52.4"
+version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32b752e52a2da0ddfbdbcc6fceadfeede4c939ed16d13e648833a61dfb611ed8"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
 [[package]]
 name = "winnow"
diff --git a/Cargo.toml b/Cargo.toml
index 23670beec3..713b3ed1f5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -239,7 +239,7 @@ nix = "=0.27.1"
 # windows deps
 junction = "=0.2.0"
 winapi = "=0.3.9"
-windows-sys = { version = "0.52.0", features = ["Win32_Foundation", "Win32_Media", "Win32_Storage_FileSystem", "Win32_System_IO", "Win32_System_WindowsProgramming", "Wdk", "Wdk_System", "Wdk_System_SystemInformation", "Win32_Security", "Win32_System_Pipes", "Wdk_Storage_FileSystem", "Win32_System_Registry", "Win32_System_Kernel"] }
+windows-sys = { version = "0.59.0", features = ["Win32_Foundation", "Win32_Media", "Win32_Storage_FileSystem", "Win32_System_IO", "Win32_System_WindowsProgramming", "Wdk", "Wdk_System", "Wdk_System_SystemInformation", "Win32_Security", "Win32_System_Pipes", "Wdk_Storage_FileSystem", "Win32_System_Registry", "Win32_System_Kernel", "Win32_System_Threading", "Win32_UI", "Win32_UI_Shell"] }
 winres = "=0.1.12"
 
 [profile.release]
diff --git a/cli/Cargo.toml b/cli/Cargo.toml
index 4a343ce747..d8e59b5e35 100644
--- a/cli/Cargo.toml
+++ b/cli/Cargo.toml
@@ -83,7 +83,7 @@ deno_path_util.workspace = true
 deno_resolver.workspace = true
 deno_runtime = { workspace = true, features = ["include_js_files_for_snapshotting"] }
 deno_semver.workspace = true
-deno_task_shell = "=0.20.1"
+deno_task_shell = "=0.20.2"
 deno_telemetry.workspace = true
 deno_terminal.workspace = true
 libsui = "0.5.0"
diff --git a/ext/io/bi_pipe.rs b/ext/io/bi_pipe.rs
index 3492e2f441..bf65d3037f 100644
--- a/ext/io/bi_pipe.rs
+++ b/ext/io/bi_pipe.rs
@@ -407,7 +407,7 @@ pub fn bi_pipe_pair_raw(
         &s,
         OPEN_EXISTING,
         FILE_FLAG_OVERLAPPED,
-        0,
+        std::ptr::null_mut(),
       );
       if hd2 == INVALID_HANDLE_VALUE {
         return Err(io::Error::last_os_error());
diff --git a/tests/specs/task/kill_task_windows_kills_children/__test__.jsonc b/tests/specs/task/kill_task_windows_kills_children/__test__.jsonc
new file mode 100644
index 0000000000..f83d24e9aa
--- /dev/null
+++ b/tests/specs/task/kill_task_windows_kills_children/__test__.jsonc
@@ -0,0 +1,5 @@
+{
+  "if": "windows",
+  "args": "run --check -A main.ts",
+  "output": "[WILDCARD]" // just ensure no failure
+}
diff --git a/tests/specs/task/kill_task_windows_kills_children/deno.jsonc b/tests/specs/task/kill_task_windows_kills_children/deno.jsonc
new file mode 100644
index 0000000000..ee8102bed5
--- /dev/null
+++ b/tests/specs/task/kill_task_windows_kills_children/deno.jsonc
@@ -0,0 +1,5 @@
+{
+  "tasks": {
+    "start": "deno run -A script.js"
+  }
+}
diff --git a/tests/specs/task/kill_task_windows_kills_children/main.ts b/tests/specs/task/kill_task_windows_kills_children/main.ts
new file mode 100644
index 0000000000..351a7db6a3
--- /dev/null
+++ b/tests/specs/task/kill_task_windows_kills_children/main.ts
@@ -0,0 +1,75 @@
+class StdoutReader {
+  readonly #reader: ReadableStreamDefaultReader<string>;
+  text = "";
+
+  constructor(stream: ReadableStream<Uint8Array>) {
+    const textStream = stream.pipeThrough(new TextDecoderStream());
+    this.#reader = textStream.getReader();
+  }
+
+  [Symbol.dispose]() {
+    this.#reader.releaseLock();
+  }
+
+  async waitForText(waitingText: string) {
+    if (this.text.includes(waitingText)) {
+      return;
+    }
+
+    while (true) {
+      const { value, done } = await this.#reader.read();
+      if (value) {
+        this.text += value;
+        if (this.text.includes(waitingText)) {
+          break;
+        }
+      }
+      if (done) {
+        throw new Error("Did not find text: " + waitingText);
+      }
+    }
+  }
+}
+
+const command = new Deno.Command("deno", {
+  args: ["task", "start"],
+  stdout: "piped",
+});
+
+const child = command.spawn();
+
+const reader = new StdoutReader(child.stdout!);
+console.log("Waiting...");
+await reader.waitForText("Ready");
+console.log("Received.");
+const pid = parseInt(reader.text.split("\n")[0], 10);
+console.log("PID", pid);
+// ensure this function works
+if (!isPidAlive(child.pid)) {
+  throw new Error("Unexpected.");
+}
+if (!isPidAlive(pid)) {
+  throw new Error("Unexpected.");
+}
+child.kill();
+// now the grandchild shouldn't be alive
+if (isPidAlive(pid)) {
+  throw new Error("Unexpected.");
+}
+
+function isPidAlive(pid: number) {
+  const command = new Deno.Command("cmd", {
+    args: ["/c", `wmic process where processid=${pid} get processid`],
+  });
+
+  try {
+    const { stdout } = command.outputSync(); // Execute the command
+    const output = new TextDecoder().decode(stdout);
+
+    console.log("wmic output:", output.trim());
+    return output.includes(pid.toString());
+  } catch (error) {
+    console.error("Error checking PID:", error);
+    return false;
+  }
+}
diff --git a/tests/specs/task/kill_task_windows_kills_children/script.js b/tests/specs/task/kill_task_windows_kills_children/script.js
new file mode 100644
index 0000000000..1a98d7280e
--- /dev/null
+++ b/tests/specs/task/kill_task_windows_kills_children/script.js
@@ -0,0 +1,3 @@
+console.log(Deno.pid);
+console.log("Ready");
+setInterval(() => {}, 10_000); // stay alive