diff --git a/.github/workflows/test-suite-windows.yml b/.github/workflows/test-suite-windows.yml
new file mode 100644
index 000000000..39688a742
--- /dev/null
+++ b/.github/workflows/test-suite-windows.yml
@@ -0,0 +1,88 @@
+# Windows doesn't support Docker out-of-box so we can run mostly unit test
+name: Test Suite on Windows
+
+on:
+  pull_request:
+    paths:
+      - '.github/workflows/**'
+      - 'src/adapter/**'
+      - 'src/core/**'
+      - 'src/lib/**'
+      - 'tools/**'
+      - 'examples/**'
+      - 'composer.lock'
+  push:
+    branches: [ 1.x ]
+    paths-ignore:
+      - 'CHANGELOG.md'
+
+# See https://stackoverflow.com/a/72408109
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  tests:
+    name: "Tests"
+
+    runs-on: "windows-latest"
+
+    strategy:
+      fail-fast: false
+      matrix:
+        dependencies:
+          - "locked"
+          - "lowest"
+          - "highest"
+        php-version:
+          - "8.1"
+          - "8.2"
+          - "8.3"
+          - "8.4"
+
+    steps:
+      - name: "Checkout"
+        uses: "actions/checkout@v4"
+
+      - name: "Install PHP"
+        uses: "shivammathur/setup-php@v2"
+        with:
+          tools: composer:v2
+          php-version: "${{ matrix.php-version }}"
+          ini-values: memory_limit=-1
+          extensions: :psr, bcmath, dom, hash, json, mbstring, xml, xmlwriter, xmlreader, zlib, sodium
+
+      - name: "List PHP Extensions"
+        run: php -m
+
+      - name: "List PHP configuration"
+        run: php -i
+
+      - name: "Get Composer Cache Directory"
+        id: composer-cache
+        run: |
+          echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
+
+      - name: "Cache Composer dependencies"
+        uses: "actions/cache@v4"
+        with:
+          path: "~\\AppData\\Roaming\\composer"
+          key: "${{ runner.os }}-php-${{ matrix.php-version }}-${{ matrix.dependencies }}-composer-${{ hashFiles('**\\composer.lock') }}"
+          restore-keys: |
+            ${{ runner.os }}-php-${{ matrix.php-version }}-${{ matrix.dependencies }}-composer-
+
+      - name: "Install lowest dependencies"
+        if: ${{ matrix.dependencies == 'lowest' }}
+        run: "composer update --prefer-lowest --no-interaction --no-progress --no-suggest"
+
+      - name: "Install highest dependencies"
+        if: ${{ matrix.dependencies == 'highest' }}
+        run: "composer update --no-interaction --no-progress --no-suggest"
+
+      - name: "Install locked dependencies"
+        if: ${{ matrix.dependencies == 'locked' }}
+        run: "composer install --no-interaction --no-progress --no-suggest"
+
+      # Please see note at top why only running unit tests
+      - name: "Test"
+        run: "composer test -- --testsuite unit"
diff --git a/src/lib/filesystem/src/Flow/Filesystem/Path.php b/src/lib/filesystem/src/Flow/Filesystem/Path.php
index b6e25e072..c7414b1b1 100644
--- a/src/lib/filesystem/src/Flow/Filesystem/Path.php
+++ b/src/lib/filesystem/src/Flow/Filesystem/Path.php
@@ -35,7 +35,7 @@ public function __construct(string $uri, array|Options $options = [])
 
         $path = \str_replace($scheme . '://', '', $uri);
 
-        if (!\str_starts_with($path, DIRECTORY_SEPARATOR)) {
+        if (PHP_OS_FAMILY !== 'Windows' && !\str_starts_with($path, DIRECTORY_SEPARATOR)) {
             $path = DIRECTORY_SEPARATOR . $path;
         }
 
diff --git a/src/lib/filesystem/tests/Flow/Filesystem/Tests/Unit/PathTest.php b/src/lib/filesystem/tests/Flow/Filesystem/Tests/Unit/PathOnUnixTest.php
similarity index 98%
rename from src/lib/filesystem/tests/Flow/Filesystem/Tests/Unit/PathTest.php
rename to src/lib/filesystem/tests/Flow/Filesystem/Tests/Unit/PathOnUnixTest.php
index f867e9952..6036b3e73 100644
--- a/src/lib/filesystem/tests/Flow/Filesystem/Tests/Unit/PathTest.php
+++ b/src/lib/filesystem/tests/Flow/Filesystem/Tests/Unit/PathOnUnixTest.php
@@ -7,9 +7,11 @@
 use function Flow\Filesystem\DSL\{partition, partitions, path, path_real};
 use Flow\Filesystem\Partitions;
 use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\Attributes\RequiresOperatingSystemFamily;
 use PHPUnit\Framework\TestCase;
 
-final class PathTest extends TestCase
+#[RequiresOperatingSystemFamily('Linux')]
+final class PathOnUnixTest extends TestCase
 {
     public static function directories() : \Generator
     {
diff --git a/src/lib/filesystem/tests/Flow/Filesystem/Tests/Unit/PathOnWindowsTest.php b/src/lib/filesystem/tests/Flow/Filesystem/Tests/Unit/PathOnWindowsTest.php
new file mode 100644
index 000000000..a587ae67b
--- /dev/null
+++ b/src/lib/filesystem/tests/Flow/Filesystem/Tests/Unit/PathOnWindowsTest.php
@@ -0,0 +1,291 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Flow\Filesystem\Tests\Unit;
+
+use function Flow\Filesystem\DSL\{partition, partitions, path, path_real};
+use Flow\Filesystem\Partitions;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\Attributes\RequiresOperatingSystemFamily;
+use PHPUnit\Framework\TestCase;
+
+#[RequiresOperatingSystemFamily('Windows')]
+final class PathOnWindowsTest extends TestCase
+{
+    public static function directories() : \Generator
+    {
+        yield 'some_file.txt' => ['some_file.txt', ''];
+        yield 'some\nested\file.csv' => ['some\nested\file.csv', 'some\nested'];
+        yield 'flow-file://nested\file\path\file.txt' => ['flow-file://nested\file\path\file.txt', 'nested\file\path'];
+    }
+
+    /**
+     * @return \Generator<int, array<string>> - string $uri, string $schema, string $parsedUri
+     */
+    public static function paths() : \Generator
+    {
+        yield 'file.csv' => ['file.csv', 'file', 'file://file.csv'];
+        yield 'file://file.csv' => ['file://file.csv', 'file', 'file://file.csv'];
+        yield '' => ['', 'file', 'file://'];
+        yield 'absolute\path\to\file.txt' => ['absolute\path\to\file.txt', 'file', 'file://absolute\path\to\file.txt'];
+        yield 'file://absolute\path\to\file.txt' => ['file://absolute\path\to\file.txt', 'file', 'file://absolute\path\to\file.txt'];
+        yield 'flow-file://' => ['flow-file://', 'flow-file', 'flow-file://'];
+        yield 'flow-file://folder\file.csv' => ['flow-file://folder\file.csv', 'flow-file', 'flow-file://folder\file.csv'];
+    }
+
+    public static function paths_pattern_matching() : \Generator
+    {
+        yield ['file.csv', 'file.csv', true];
+        yield ['nested\folder\any\file.csv', 'nested\folder\*/file.csv', false];
+        yield ['nested\folder\*/file.csv', 'nested\folder\any\file.csv', true];
+        yield ['nested\folder\[a]*/file.csv', 'nested\folder\ab\file.csv', true];
+        yield ['nested\folder/**/file.csv', 'nested\folder\any\nested\file.csv', true];
+        yield ['nested\folder/**/fil?.csv', 'nested\folder\any\nested\file.csv', true];
+    }
+
+    public static function paths_with_partitions() : \Generator
+    {
+        yield '' => ['', partitions()];
+        yield 'file://path\without\partitions\file.csv' => ['file://path\without\partitions\file.csv', partitions()];
+        yield 'file://path\country=US\file.csv' => ['file://path\country=US\file.csv', partitions(partition('country', 'US'))];
+        yield 'file://path\country=US\region=america\file.csv' => ['file://path\country=US\region=america\file.csv', partitions(partition('country', 'US'), partition('region', 'america'))];
+        yield 'file://path\country=*/file.csv' => ['file://path\country=*/file.csv', partitions()];
+    }
+
+    public static function paths_with_static_parts() : \Generator
+    {
+        yield 'file.csv' => ['file.csv', 'file.csv'];
+        yield 'nested\folder\*/file.csv' => ['nested\folder', 'nested\folder\*/file.csv'];
+        yield 'nested\folder\path\{one|two}\file.csv' => ['nested\folder\path', 'nested\folder\path\{one|two}\file.csv'];
+        yield 'file*.csv' => ['', 'file*.csv'];
+        yield '{one|two|tree}.csv' => ['', '{one|two|tree}.csv'];
+        yield 'file.{parquet|csv}' => ['', 'file.{parquet|csv}'];
+        yield 'flow-file://nested\partition={one,two}\*.csv' => ['flow-file://nested', 'flow-file://nested\partition={one,two}\*.csv'];
+        yield 'flow-file://nested\partition=[one]\*.csv' => ['flow-file://nested', 'flow-file://nested\partition=[one]\*.csv'];
+        yield 'nested\partition=[one]\*.csv' => ['file://nested', 'nested\partition=[one]\*.csv'];
+    }
+
+    protected function setUp() : void
+    {
+        if (!\file_exists(__DIR__ . 'var')) {
+            \mkdir(__DIR__ . 'var');
+        }
+    }
+
+    public function test_add_partitions_to_path_pattern() : void
+    {
+        $this->expectExceptionMessage("Can't add partitions to path pattern.");
+
+        (path('path\to\group=*/file.txt'))->addPartitions(partition('group', 'a'));
+    }
+
+    public function test_add_partitions_to_path_with_extension() : void
+    {
+        self::assertEquals(
+            path('path\to\group=a\file.txt'),
+            (path('path\to\file.txt'))->addPartitions(partition('group', 'a'))
+        );
+    }
+
+    public function test_add_partitions_to_path_without_extension() : void
+    {
+        self::assertEquals(
+            path('path\to\group=a\folder'),
+            (path('path\to\folder'))->addPartitions(partition('group', 'a'))
+        );
+    }
+
+    public function test_add_partitions_to_root_path_with_extension() : void
+    {
+        self::assertEquals(
+            path('group=a\file.txt'),
+            (path('file.txt'))->addPartitions(partition('group', 'a'))
+        );
+    }
+
+    public function test_add_partitions_to_root_path_without_extension() : void
+    {
+        self::assertEquals(
+            path('group=a\folder'),
+            (path('folder'))->addPartitions(partition('group', 'a'))
+        );
+    }
+
+    #[DataProvider('directories')]
+    public function test_directories(string $uri, string $dirPath) : void
+    {
+        self::assertSame($dirPath, (path($uri))->parentDirectory()->path());
+    }
+
+    public function test_extension() : void
+    {
+        self::assertSame('php', (path(__FILE__))->extension());
+        self::assertFalse((path(__DIR__))->extension());
+    }
+
+    public function test_extension_uppercase() : void
+    {
+        self::assertSame('php', (path('var\file\code.PhP'))->extension());
+    }
+
+    public function test_file_prefix() : void
+    {
+        $path = path('flow-file://var\dir\file.csv', []);
+
+        self::assertSame(
+            'flow-file://var\dir\._flow_tmp.file.csv',
+            $path->basenamePrefix('._flow_tmp.')->uri()
+        );
+        self::assertSame('csv', $path->extension());
+    }
+
+    public function test_file_prefix_on_directory() : void
+    {
+        $path = path('flow-file://var\dir', []);
+
+        self::assertSame(
+            'flow-file://var\._flow_tmp.dir',
+            $path->basenamePrefix('._flow_tmp.')->uri()
+        );
+        self::assertFalse($path->extension());
+    }
+
+    public function test_file_prefix_on_root_directory() : void
+    {
+        $path = path('flow-file://', []);
+
+        self::assertSame(
+            'flow-file://._flow_tmp.',
+            $path->basenamePrefix('._flow_tmp.')->uri()
+        );
+        self::assertFalse($path->extension());
+    }
+
+    #[DataProvider('paths_with_static_parts')]
+    public function test_finding_static_part_of_the_path(string $staticPart, string $uri) : void
+    {
+        self::assertEquals(path($staticPart), (path($uri))->staticPart());
+    }
+
+    public function test_local_file() : void
+    {
+        self::assertNull((path(__FILE__))->context()->resource());
+    }
+
+    #[DataProvider('paths_pattern_matching')]
+    public function test_matching_pattern_with_path(string $path, string $pattern, bool $result) : void
+    {
+        self::assertSame($result, (path($path))->matches(path($pattern)));
+    }
+
+    public function test_not_matching_items_under_directory_that_matches_pattern() : void
+    {
+        $path = path('flow-file://var\file\partition=*');
+
+        self::assertTrue($path->matches(path('flow-file://var\file\partition=1')));
+        self::assertFalse($path->matches(path('flow-file://var\file\partition=1\file.csv')));
+    }
+
+    #[DataProvider('paths')]
+    public function test_parsing_path(string $uri, string $schema, string $parsedUri) : void
+    {
+        self::assertEquals($schema, (path($uri))->protocol()->name);
+        self::assertEquals($parsedUri, (path($uri))->uri());
+    }
+
+    #[DataProvider('paths_with_partitions')]
+    public function test_partitions_in_path(string $uri, Partitions $partitions) : void
+    {
+        self::assertEquals($partitions, (path($uri))->partitions());
+    }
+
+    public function test_partitions_paths() : void
+    {
+        $path = path('var\path\partition_1=A\partition_2=B\file.csv', ['option' => true]);
+
+        self::assertEquals(
+            [
+                path('var\path\partition_1=A', ['option' => true]),
+                path('var\path\partition_1=A\partition_2=B', ['option' => true]),
+            ],
+            $path->partitionsPaths()
+        );
+    }
+
+    public function test_randomization_file_path() : void
+    {
+        $path = path('flow-file://var\file\test.csv', []);
+
+        self::assertStringStartsWith(
+            'flow-file://var\file\test_',
+            $path->randomize()->uri()
+        );
+        self::assertStringEndsWith(
+            '.csv',
+            $path->randomize()->uri()
+        );
+    }
+
+    public function test_randomization_folder_path() : void
+    {
+        $path = path('flow-file://var\file\folder', []);
+
+        self::assertStringStartsWith(
+            'flow-file://var\file\folder_',
+            $path->randomize()->uri()
+        );
+    }
+
+    public function test_real_path_on_custom_schema() : void
+    {
+        $path = path_real('azure-blob://var\dir\file.php');
+
+        self::assertSame('azure-blob://var\dir\file.php', $path->uri());
+    }
+
+    public function test_set_extension() : void
+    {
+        $path = path('flow-file://var\dir\file.csv', []);
+
+        self::assertSame(
+            'flow-file://var\dir\file.parquet',
+            $path->setExtension('parquet')->uri()
+        );
+    }
+
+    public function test_set_extension_on_directory() : void
+    {
+        $path = path('flow-file://var\dir\\', []);
+
+        self::assertSame(
+            'flow-file://var\dir.parquet',
+            $path->setExtension('parquet')->uri()
+        );
+    }
+
+    public function test_set_extension_on_file_without_extension() : void
+    {
+        $path = path('flow-file://var\dir\file', []);
+
+        self::assertSame(
+            'flow-file://var\dir\file.parquet',
+            $path->setExtension('parquet')->uri()
+        );
+    }
+
+    public function test_suffix() : void
+    {
+        $path = path('flow-file://var\dir', []);
+
+        self::assertSame(
+            'flow-file://var\dir\test.csv',
+            $path->suffix('test.csv')->uri()
+        );
+
+        self::assertSame(
+            'flow-file://var\dir\test.csv',
+            $path->suffix('test.csv')->uri()
+        );
+    }
+}