diff --git a/packages/devtools_shared/CHANGELOG.md b/packages/devtools_shared/CHANGELOG.md
index cdaa12e1c9f..538f740e448 100644
--- a/packages/devtools_shared/CHANGELOG.md
+++ b/packages/devtools_shared/CHANGELOG.md
@@ -1,3 +1,6 @@
+# 6.0.2
+* Fix an issue parsing file paths on Windows that could prevent extensions from being detected.
+
 # 6.0.1
 * Bump minimum Dart SDK version to `3.3.0-91.0.dev` and minimum Flutter SDK version to `3.17.0-0.0.pre`.
 * Add field `isPublic` to `DevToolsExtensionConfig`.
diff --git a/packages/devtools_shared/lib/src/extensions/extension_manager.dart b/packages/devtools_shared/lib/src/extensions/extension_manager.dart
index ba3c45eea65..0d097f0ebba 100644
--- a/packages/devtools_shared/lib/src/extensions/extension_manager.dart
+++ b/packages/devtools_shared/lib/src/extensions/extension_manager.dart
@@ -61,7 +61,7 @@ class ExtensionsManager {
       try {
         extensions = await findExtensions(
           'devtools',
-          packageConfig: Uri.parse(
+          packageConfig: Uri.file(
             path.join(
               rootPath,
               '.dart_tool',
diff --git a/packages/devtools_shared/pubspec.yaml b/packages/devtools_shared/pubspec.yaml
index 76a3161e9cc..faf53aceb18 100644
--- a/packages/devtools_shared/pubspec.yaml
+++ b/packages/devtools_shared/pubspec.yaml
@@ -1,7 +1,7 @@
 name: devtools_shared
 description: Package of shared Dart structures between devtools_app, dds, and other tools.
 
-version: 6.0.1
+version: 6.0.2-wip
 
 repository: https://github.com/flutter/devtools/tree/master/packages/devtools_shared
 
diff --git a/packages/devtools_shared/test/extensions/extension_enablement_test.dart b/packages/devtools_shared/test/extensions/extension_enablement_test.dart
index adeabda69da..9adb3cc7b7a 100644
--- a/packages/devtools_shared/test/extensions/extension_enablement_test.dart
+++ b/packages/devtools_shared/test/extensions/extension_enablement_test.dart
@@ -17,7 +17,7 @@ void main() {
     setUp(() {
       options = DevToolsOptions();
       tmpDir = Directory.current.createTempSync();
-      tmpUri = Uri.parse(tmpDir.path);
+      tmpUri = Uri.file(tmpDir.path);
     });
 
     tearDown(() {
diff --git a/packages/devtools_shared/test/extensions/extension_manager_test.dart b/packages/devtools_shared/test/extensions/extension_manager_test.dart
index 64c7438807c..342fee77a1b 100644
--- a/packages/devtools_shared/test/extensions/extension_manager_test.dart
+++ b/packages/devtools_shared/test/extensions/extension_manager_test.dart
@@ -44,9 +44,9 @@ void main() {
 
 Directory _createFromDir() {
   final from = Directory('tmp')..createSync();
-  File.fromUri(Uri.parse(p.join(from.path, 'foo.txt')))..createSync();
+  File(p.join(from.path, 'foo.txt'))..createSync();
   final dir = Directory(p.join(from.path, 'bar'))..createSync();
-  File.fromUri(Uri.parse(p.join(dir.path, 'baz.txt')))..createSync();
+  File(p.join(dir.path, 'baz.txt'))..createSync();
   final contents = _contentAsOrderedString(from);
   expect(
     contents,
@@ -65,5 +65,17 @@ Directory _createToDir() {
 String _contentAsOrderedString(Directory dir) {
   final contents = dir.listSync(recursive: true)
     ..sort((a, b) => a.path.compareTo(b.path));
-  return contents.toString();
+  return contents
+      // Always use posix paths so that expectations can be consistent between
+      // Mac/Windows.
+      .map(
+        (e) =>
+            "${e is Directory ? 'Directory' : 'File'}: '${posixPath(e.path)}'",
+      )
+      .toList()
+      .toString();
 }
+
+/// Returns a relative path [input] with posix/forward slashes regardless of
+/// the current platform.
+String posixPath(String input) => p.posix.joinAll(p.split(input));