diff --git a/auth/assets/ca/lets-encrypt-r3.pem b/auth/assets/ca/lets-encrypt-r3.pem
new file mode 100644
index 0000000000..43b222a60a
--- /dev/null
+++ b/auth/assets/ca/lets-encrypt-r3.pem
@@ -0,0 +1,30 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/auth/lib/core/network.dart b/auth/lib/core/network.dart
index 0efa09fb5d..c14c9e758b 100644
--- a/auth/lib/core/network.dart
+++ b/auth/lib/core/network.dart
@@ -1,10 +1,8 @@
 import 'dart:io';
 
 import 'package:dio/dio.dart';
-import 'package:dio/io.dart';
 import 'package:ente_auth/core/configuration.dart';
 import 'package:ente_auth/core/event_bus.dart';
-import 'package:ente_auth/core/win_http_client.dart';
 import 'package:ente_auth/events/endpoint_updated_event.dart';
 import 'package:ente_auth/utils/package_info_util.dart';
 import 'package:ente_auth/utils/platform_util.dart';
@@ -52,19 +50,6 @@ class Network {
         },
       ),
     );
-    if (Platform.isWindows) {
-      final customHttpClient = windowsHttpClient();
-      _enteDio.httpClientAdapter = IOHttpClientAdapter(
-        createHttpClient: () {
-          return customHttpClient;
-        },
-      );
-      _dio.httpClientAdapter = IOHttpClientAdapter(
-        createHttpClient: () {
-          return customHttpClient;
-        },
-      );
-    }
     _setupInterceptors(endpoint);
 
     Bus.instance.on<EndpointUpdatedEvent>().listen((event) {
diff --git a/auth/lib/main.dart b/auth/lib/main.dart
index 18a8c3e1ae..9f6e611b3f 100644
--- a/auth/lib/main.dart
+++ b/auth/lib/main.dart
@@ -28,6 +28,7 @@ import 'package:ente_crypto_dart/ente_crypto_dart.dart';
 import 'package:flutter/foundation.dart';
 import "package:flutter/material.dart";
 import 'package:flutter/scheduler.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_displaymode/flutter_displaymode.dart';
 import 'package:logging/logging.dart';
 import 'package:path_provider/path_provider.dart';
@@ -65,6 +66,9 @@ Future<void> initSystemTray() async {
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
+  if (Platform.isWindows) {
+    await whiteListLetsEncryptRootCA();
+  }
 
   if (PlatformUtil.isDesktop()) {
     await windowManager.ensureInitialized();
@@ -86,6 +90,19 @@ void main() async {
   }
 }
 
+Future<void> whiteListLetsEncryptRootCA() async {
+  try {
+    // https://stackoverflow.com/a/71090239
+    // https://github.com/ente-io/ente/issues/2178
+    ByteData data =
+        await PlatformAssetBundle().load('assets/ca/lets-encrypt-r3.pem');
+    SecurityContext.defaultContext
+        .setTrustedCertificatesBytes(data.buffer.asUint8List());
+  } catch (e) {
+    _logger.severe("Failed to whitelist Let's Encrypt Root CA", e);
+  }
+}
+
 Future<void> _runInForeground() async {
   final savedThemeMode = _themeMode(await AdaptiveTheme.getThemeMode());
   return await _runWithLogs(() async {
diff --git a/auth/pubspec.yaml b/auth/pubspec.yaml
index 211159b768..d1881bf54d 100644
--- a/auth/pubspec.yaml
+++ b/auth/pubspec.yaml
@@ -1,6 +1,6 @@
 name: ente_auth
 description: ente two-factor authenticator
-version: 3.0.17+317
+version: 3.0.18+318
 publish_to: none
 
 environment:
@@ -132,6 +132,7 @@ flutter:
     - assets/custom-icons/icons/
     - assets/custom-icons/_data/
     - assets/svg/
+    - assets/ca/
 
   fonts:
     - family: Inter