diff --git a/chrome/browser/ash/policy/remote_commands/crd/device_command_fetch_crd_availability_info_job_unittest.cc b/chrome/browser/ash/policy/remote_commands/crd/device_command_fetch_crd_availability_info_job_unittest.cc
index 233be7b7a4746..0f399ee22a273 100644
--- a/chrome/browser/ash/policy/remote_commands/crd/device_command_fetch_crd_availability_info_job_unittest.cc
+++ b/chrome/browser/ash/policy/remote_commands/crd/device_command_fetch_crd_availability_info_job_unittest.cc
@@ -223,9 +223,6 @@ class DeviceCommandFetchCrdAvailabilityInfoJobTestParameterizedOverSessionType
   CrdSessionAvailability GetExpectedRemoteSupportAvailabilityFor(
       TestSessionType session_type) {
     switch (session_type) {
-      // TODO(b:393521569) Update session availability on default enabled state
-      // for CRD unattended feature flag.
-      case TestSessionType::kNoSession:
       case TestSessionType::kGuestSession:
       case TestSessionType::kUnaffiliatedUserSession:
         return CrdSessionAvailability::
@@ -237,6 +234,7 @@ class DeviceCommandFetchCrdAvailabilityInfoJobTestParameterizedOverSessionType
       case TestSessionType::kAutoLaunchedKioskSession:
       case TestSessionType::kManagedGuestSession:
       case TestSessionType::kAffiliatedUserSession:
+      case TestSessionType::kNoSession:
         return CrdSessionAvailability::AVAILABLE;
     }
   }
@@ -310,15 +308,15 @@ TEST_F(DeviceCommandFetchCrdAvailabilityInfoJobTest,
 }
 
 TEST_F(DeviceCommandFetchCrdAvailabilityInfoJobTest,
-       AllowRemoteSupportSessionAtLoginScreenIfEnabledByFeatureFlag) {
+       DontAllowRemoteSupportSessionAtLoginScreenIfDisabledByFeatureFlag) {
   base::test::ScopedFeatureList feature_list;
-  feature_list.InitAndEnableFeature(kEnableCrdSharedSessionToUnattendedDevice);
+  feature_list.InitAndDisableFeature(kEnableCrdSharedSessionToUnattendedDevice);
 
   StartSessionOfType(TestSessionType::kNoSession);
   Result result = CreateAndRunJob();
 
   EXPECT_EQ(ParseJsonDict(result.payload).FindInt("remoteSupportAvailability"),
-            CrdSessionAvailability::AVAILABLE);
+            CrdSessionAvailability::UNAVAILABLE_UNSUPPORTED_USER_SESSION_TYPE);
 }
 
 TEST_P(DeviceCommandFetchCrdAvailabilityInfoJobTestParameterizedOverSessionType,
@@ -371,7 +369,10 @@ TEST_P(DeviceCommandFetchCrdAvailabilityInfoJobTestParameterizedOverSessionType,
   const base::Value::List expected = [&]() {
     switch (session_type) {
       case TestSessionType::kNoSession:
-        return ToList({CrdSessionType::REMOTE_ACCESS_SESSION});
+        return ToList({
+            CrdSessionType::REMOTE_SUPPORT_SESSION,
+            CrdSessionType::REMOTE_ACCESS_SESSION,
+        });
 
       case TestSessionType::kManuallyLaunchedWebKioskSession:
       case TestSessionType::kManuallyLaunchedKioskSession:
@@ -428,12 +429,12 @@ TEST_P(DeviceCommandFetchCrdAvailabilityInfoJobTestParameterizedOverSessionType,
 
   const CrdSessionAvailability expected = [&]() {
     switch (session_type) {
-      case TestSessionType::kNoSession:
       case TestSessionType::kGuestSession:
       case TestSessionType::kUnaffiliatedUserSession:
         return CrdSessionAvailability::
             UNAVAILABLE_UNSUPPORTED_USER_SESSION_TYPE;
 
+      case TestSessionType::kNoSession:
       case TestSessionType::kManuallyLaunchedWebKioskSession:
       case TestSessionType::kManuallyLaunchedKioskSession:
       case TestSessionType::kAutoLaunchedWebKioskSession:
diff --git a/chrome/browser/ash/policy/remote_commands/crd/device_command_start_crd_session_job_unittest.cc b/chrome/browser/ash/policy/remote_commands/crd/device_command_start_crd_session_job_unittest.cc
index b139f3b6ef41f..2d3636211d2a4 100644
--- a/chrome/browser/ash/policy/remote_commands/crd/device_command_start_crd_session_job_unittest.cc
+++ b/chrome/browser/ash/policy/remote_commands/crd/device_command_start_crd_session_job_unittest.cc
@@ -143,13 +143,11 @@ bool SupportsRemoteSupport(TestSessionType user_session_type) {
     case TestSessionType::kAutoLaunchedKioskSession:
     case TestSessionType::kManagedGuestSession:
     case TestSessionType::kAffiliatedUserSession:
+    case TestSessionType::kNoSession:
       return true;
 
     case TestSessionType::kGuestSession:
     case TestSessionType::kUnaffiliatedUserSession:
-    // TODO(b:393521569) Update session type supported on default enabled
-    // state for CRD unattended feature flag.
-    case TestSessionType::kNoSession:
       return false;
   }
 }
@@ -446,13 +444,11 @@ TEST_P(DeviceCommandStartCrdSessionJobTestParameterized,
       case TestSessionType::kAutoLaunchedKioskSession:
       case TestSessionType::kManagedGuestSession:
       case TestSessionType::kAffiliatedUserSession:
+      case TestSessionType::kNoSession:
         return true;
 
       case TestSessionType::kGuestSession:
       case TestSessionType::kUnaffiliatedUserSession:
-      // TODO(b:393521569) Update session type supported on default enabled
-      // state for CRD unattended feature flag.
-      case TestSessionType::kNoSession:
         return false;
     }
   }();
@@ -483,13 +479,11 @@ TEST_P(DeviceCommandStartCrdSessionJobTestParameterized,
       case TestSessionType::kAutoLaunchedKioskSession:
       case TestSessionType::kManagedGuestSession:
       case TestSessionType::kAffiliatedUserSession:
+      case TestSessionType::kNoSession:
         return true;
 
       case TestSessionType::kGuestSession:
       case TestSessionType::kUnaffiliatedUserSession:
-      case TestSessionType::kNoSession:
-        // TODO(b:393521569) Update session type supported on default enabled
-        // state for CRD unattended feature flag.
         return false;
     }
   }();
@@ -661,15 +655,16 @@ TEST_P(DeviceCommandStartCrdSessionJobTestBoolParameterized,
 }
 
 TEST_F(DeviceCommandStartCrdSessionJobTest,
-       AllowRemoteSupportSessionAtLoginScreenIfEnabledByFeatureFlag) {
-  EnableFeature(kEnableCrdSharedSessionToUnattendedDevice);
+       DontAllowRemoteSupportSessionAtLoginScreenIfDisabledByFeatureFlag) {
+  DisableFeature(kEnableCrdSharedSessionToUnattendedDevice);
 
   StartSessionOfType(TestSessionType::kNoSession);
 
   Result result = RunJobAndWaitForResult(
       Payload().Set("crdSessionType", CrdSessionType::REMOTE_SUPPORT_SESSION));
 
-  EXPECT_SUCCESS(result);
+  EXPECT_ERROR(result,
+               StartCrdSessionResultCode::FAILURE_UNSUPPORTED_USER_TYPE);
 }
 
 TEST_F(DeviceCommandStartCrdSessionJobTest,
@@ -705,13 +700,11 @@ TEST_P(DeviceCommandStartCrdSessionJobTestParameterized,
 
       case TestSessionType::kManagedGuestSession:
       case TestSessionType::kAffiliatedUserSession:
+      case TestSessionType::kNoSession:
         return false;
 
       case TestSessionType::kGuestSession:
       case TestSessionType::kUnaffiliatedUserSession:
-      // TODO(b:393521569) Update session type supported on default enabled
-      // state for CRD unattended feature flag.
-      case TestSessionType::kNoSession:
         // Unsupported session types
         NOTREACHED();
     }
@@ -742,17 +735,6 @@ TEST_P(DeviceCommandStartCrdSessionJobTestParameterized,
   EXPECT_FALSE(delegate().session_parameters().terminate_upon_input);
 }
 
-TEST_F(DeviceCommandStartCrdSessionJobTest,
-       ShouldNotTerminateUponInputForRemoteSupportAtLoginScreen) {
-  EnableFeature(kEnableCrdSharedSessionToUnattendedDevice);
-
-  StartSessionOfType(TestSessionType::kNoSession);
-  Result result = RunJobAndWaitForResult();
-
-  EXPECT_SUCCESS(result);
-  EXPECT_FALSE(delegate().session_parameters().terminate_upon_input);
-}
-
 TEST_P(DeviceCommandStartCrdSessionJobTestParameterized,
        TestShowConfirmationDialogForRemoteSupport) {
   TestSessionType user_session_type = GetParam();
@@ -777,13 +759,11 @@ TEST_P(DeviceCommandStartCrdSessionJobTestParameterized,
 
       case TestSessionType::kManagedGuestSession:
       case TestSessionType::kAffiliatedUserSession:
+      case TestSessionType::kNoSession:
         return true;
 
       case TestSessionType::kGuestSession:
       case TestSessionType::kUnaffiliatedUserSession:
-      // TODO(b:393521569) Update session type supported on default enabled
-      // state for CRD unattended feature flag.
-      case TestSessionType::kNoSession:
         // Unsupported session types
         NOTREACHED();
     }
@@ -807,7 +787,6 @@ TEST_F(DeviceCommandStartCrdSessionJobTest,
 
 TEST_F(DeviceCommandStartCrdSessionJobTest,
        TestConnectionAutoApproveTimeoutForSharedSessions) {
-  EnableFeature(kAutoApproveEnterpriseSharedSessions);
   AddActiveManagedNetwork();
   SetDeviceIdleTime(kAutoApproveDeviceIdlenessCutoff);
 
@@ -846,7 +825,6 @@ TEST_F(DeviceCommandStartCrdSessionJobTest,
 TEST_F(
     DeviceCommandStartCrdSessionJobTest,
     ShouldNotSetConnectionAutoApproveTimeoutIfDeviceIsIdleMoreThanTheCutoff) {
-  EnableFeature(kAutoApproveEnterpriseSharedSessions);
   AddActiveManagedNetwork();
   SetDeviceIdleTime(kAutoApproveDeviceIdlenessCutoff + 1);
 
@@ -861,7 +839,6 @@ TEST_F(
 TEST_F(
     DeviceCommandStartCrdSessionJobTest,
     ShouldNotSetConnectionAutoApproveTimeoutIfDeviceIsNotConnectedToManagedNetwork) {
-  EnableFeature(kAutoApproveEnterpriseSharedSessions);
   SetDeviceIdleTime(kAutoApproveDeviceIdlenessCutoff);
 
   LogInAsAffiliatedUser();
@@ -1300,16 +1277,6 @@ TEST_F(DeviceCommandStartCrdSessionJobRemoteAccessTest,
   EXPECT_FALSE(delegate().session_parameters().terminate_upon_input);
 }
 
-TEST_F(DeviceCommandStartCrdSessionJobRemoteAccessTest,
-       ShouldNotTerminateUponInputEvenIfEnabledByCrdUnattendedFeatureFlag) {
-  EnableFeature(kEnableCrdSharedSessionToUnattendedDevice);
-
-  AddActiveManagedNetwork();
-
-  EXPECT_SUCCESS(RunJobAndWaitForResult());
-  EXPECT_FALSE(delegate().session_parameters().terminate_upon_input);
-}
-
 TEST_F(DeviceCommandStartCrdSessionJobRemoteAccessTest,
        ShouldNotShowConfirmationDialog) {
   AddActiveManagedNetwork();
@@ -1318,16 +1285,6 @@ TEST_F(DeviceCommandStartCrdSessionJobRemoteAccessTest,
   EXPECT_FALSE(delegate().session_parameters().show_confirmation_dialog);
 }
 
-TEST_F(DeviceCommandStartCrdSessionJobRemoteAccessTest,
-       ShouldNotShowConfirmationDialogEvenIfEnabledByCrdUnattendedFeatureFlag) {
-  EnableFeature(kEnableCrdSharedSessionToUnattendedDevice);
-
-  AddActiveManagedNetwork();
-
-  EXPECT_SUCCESS(RunJobAndWaitForResult(RemoteAccessPayload()));
-  EXPECT_FALSE(delegate().session_parameters().show_confirmation_dialog);
-}
-
 TEST_F(DeviceCommandStartCrdSessionJobRemoteAccessTest,
        ShouldNotLimitSessionDuration) {
   AddActiveManagedNetwork();
@@ -1340,7 +1297,6 @@ TEST_F(DeviceCommandStartCrdSessionJobRemoteAccessTest,
 
 TEST_F(DeviceCommandStartCrdSessionJobRemoteAccessTest,
        ShouldNotSetConnectionAutoApproveTimeout) {
-  EnableFeature(kAutoApproveEnterpriseSharedSessions);
   AddActiveManagedNetwork();
   SetDeviceIdleTime(kAutoApproveDeviceIdlenessCutoff);
 
diff --git a/remoting/host/chromeos/features.cc b/remoting/host/chromeos/features.cc
index 398c38ab70d66..84ff54d683a76 100644
--- a/remoting/host/chromeos/features.cc
+++ b/remoting/host/chromeos/features.cc
@@ -18,10 +18,10 @@ BASE_FEATURE(kEnableCrdFileTransferForKiosk,
 
 BASE_FEATURE(kEnableCrdSharedSessionToUnattendedDevice,
              "EnableCrdSharedSessionToUnattendedDevice",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kAutoApproveEnterpriseSharedSessions,
              "EnableAutoApproveEnterpriseSharedSessions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 }  // namespace remoting::features