diff --git a/web/__test__/components/Onboarding/OnboardingSummaryStep.test.ts b/web/__test__/components/Onboarding/OnboardingSummaryStep.test.ts
index 8e72bf07ab..1cb8b99d9a 100644
--- a/web/__test__/components/Onboarding/OnboardingSummaryStep.test.ts
+++ b/web/__test__/components/Onboarding/OnboardingSummaryStep.test.ts
@@ -255,9 +255,9 @@ const mountComponent = (props: Record<string, unknown> = {}) => {
           template: '<button :disabled="disabled" @click="$emit(\'click\')"><slot /></button>',
         },
         UModal: {
-          props: ['open', 'ui', 'title', 'description'],
+          props: ['open', 'ui', 'title', 'description', 'dismissible', 'close'],
           template: `
-            <div v-if="open" data-testid="dialog" :class="ui?.content">
+            <div v-if="open" data-testid="dialog" :class="ui?.content" :data-dismissible="dismissible" :data-close="close" :data-title="title">
               <div>{{ title }}</div>
               <div>{{ description }}</div>
               <slot name="body" />
@@ -584,6 +584,20 @@ describe('OnboardingSummaryStep', () => {
     });
   });
 
+  it('only allows closing the apply result dialog via the OK button', async () => {
+    const { wrapper, onComplete } = mountComponent();
+
+    await clickApply(wrapper);
+
+    const vm = getSummaryVm(wrapper);
+    expect(vm.showApplyResultDialog).toBe(true);
+    expect(onComplete).not.toHaveBeenCalled();
+
+    vm.handleApplyResultConfirm();
+    expect(vm.showApplyResultDialog).toBe(false);
+    expect(onComplete).toHaveBeenCalledOnce();
+  });
+
   it.each([
     {
       caseName: 'switches to en_US directly without language pack install',
diff --git a/web/src/components/Onboarding/steps/OnboardingSummaryStep.vue b/web/src/components/Onboarding/steps/OnboardingSummaryStep.vue
index c09e6c2fab..86a1e89625 100644
--- a/web/src/components/Onboarding/steps/OnboardingSummaryStep.vue
+++ b/web/src/components/Onboarding/steps/OnboardingSummaryStep.vue
@@ -1386,6 +1386,8 @@ const handleBack = () => {
 
       <UModal
         :open="showApplyResultDialog"
+        :dismissible="false"
+        :close="false"
         :portal="false"
         :title="applyResultTitle"
         :description="applyResultMessage"
@@ -1396,7 +1398,6 @@ const handleBack = () => {
             ? 'z-50 w-[calc(100vw-2rem)] max-w-3xl'
             : 'z-50 max-w-md',
         }"
-        @update:open="showApplyResultDialog = $event"
       >
         <template v-if="showDiagnosticLogsInResultDialog" #body>
           <div class="space-y-3">