diff --git a/src/components/rightSidePanel/errors/MissingNodeCard.test.ts b/src/components/rightSidePanel/errors/MissingNodeCard.test.ts
index 08380b4795..a85a1436d1 100644
--- a/src/components/rightSidePanel/errors/MissingNodeCard.test.ts
+++ b/src/components/rightSidePanel/errors/MissingNodeCard.test.ts
@@ -57,6 +57,8 @@ const i18n = createI18n({
         missingNodePacks: {
           ossMessage: 'Missing node packs detected. Install them.',
           cloudMessage: 'Unsupported node packs detected.',
+          ossManagerDisabledHint:
+            'To install missing nodes, first run {pipCmd} in your Python environment to install Node Manager, then restart ComfyUI with the {flag} flag.',
           applyChanges: 'Apply Changes'
         }
       }
@@ -146,6 +148,27 @@ describe('MissingNodeCard', () => {
     })
   })
 
+  describe('Manager Disabled Hint', () => {
+    it('shows hint when OSS and manager is disabled (showInfoButton false)', () => {
+      mockIsCloud.value = false
+      const wrapper = mountCard({ showInfoButton: false })
+      expect(wrapper.text()).toContain('pip install -U --pre comfyui-manager')
+      expect(wrapper.text()).toContain('--enable-manager')
+    })
+
+    it('hides hint when manager is enabled (showInfoButton true)', () => {
+      mockIsCloud.value = false
+      const wrapper = mountCard({ showInfoButton: true })
+      expect(wrapper.text()).not.toContain('--enable-manager')
+    })
+
+    it('hides hint on Cloud even when showInfoButton is false', () => {
+      mockIsCloud.value = true
+      const wrapper = mountCard({ showInfoButton: false })
+      expect(wrapper.text()).not.toContain('--enable-manager')
+    })
+  })
+
   describe('Apply Changes Section', () => {
     it('hides Apply Changes when manager is not enabled', () => {
       mockShouldShowManagerButtons.value = false
diff --git a/src/components/rightSidePanel/errors/MissingNodeCard.vue b/src/components/rightSidePanel/errors/MissingNodeCard.vue
index a5e289fa6e..e58d859c5b 100644
--- a/src/components/rightSidePanel/errors/MissingNodeCard.vue
+++ b/src/components/rightSidePanel/errors/MissingNodeCard.vue
@@ -1,13 +1,37 @@
 <template>
   <div class="px-4 pb-2">
     <!-- Sub-label: cloud or OSS message shown above all pack groups -->
-    <p class="m-0 pb-5 text-sm text-muted-foreground leading-relaxed">
+    <p
+      class="m-0 text-sm text-muted-foreground leading-relaxed"
+      :class="showManagerHint ? 'pb-3' : 'pb-5'"
+    >
       {{
         isCloud
           ? t('rightSidePanel.missingNodePacks.cloudMessage')
           : t('rightSidePanel.missingNodePacks.ossMessage')
       }}
     </p>
+
+    <!-- Manager disabled hint: shown on OSS when manager is not active -->
+    <i18n-t
+      v-if="showManagerHint"
+      keypath="rightSidePanel.missingNodePacks.ossManagerDisabledHint"
+      tag="p"
+      class="m-0 pb-5 text-sm text-muted-foreground leading-relaxed"
+    >
+      <template #pipCmd>
+        <code
+          class="px-1 py-0.5 rounded text-xs font-mono bg-comfy-menu-bg text-comfy-input-foreground"
+          >pip install -U --pre comfyui-manager</code
+        >
+      </template>
+      <template #flag>
+        <code
+          class="px-1 py-0.5 rounded text-xs font-mono bg-comfy-menu-bg text-comfy-input-foreground"
+          >--enable-manager</code
+        >
+      </template>
+    </i18n-t>
     <MissingPackGroupRow
       v-for="group in missingPackGroups"
       :key="group.packId ?? '__unknown__'"
@@ -66,6 +90,13 @@ const comfyManagerStore = useComfyManagerStore()
 const { isRestarting, applyChanges } = useApplyChanges()
 const { shouldShowManagerButtons } = useManagerState()
 
+/**
+ * Show the --enable-manager hint when:
+ * - Not on Cloud (OSS/local only)
+ * - Manager is disabled (showInfoButton is false)
+ */
+const showManagerHint = computed(() => !isCloud && !props.showInfoButton)
+
 /**
  * Show Apply Changes when any pack from the error group is already installed
  * on disk but ComfyUI hasn't restarted yet to load it.
diff --git a/src/locales/en/main.json b/src/locales/en/main.json
index f0ad678aa9..61fe4fe4c6 100644
--- a/src/locales/en/main.json
+++ b/src/locales/en/main.json
@@ -3207,6 +3207,7 @@
       "unsupportedTitle": "Unsupported Node Packs",
       "cloudMessage": "This workflow requires custom nodes not yet available on Comfy Cloud.",
       "ossMessage": "This workflow uses custom nodes you haven't installed yet.",
+      "ossManagerDisabledHint": "To install missing nodes, first run {pipCmd} in your Python environment to install Node Manager, then restart ComfyUI with the {flag} flag.",
       "installAll": "Install All",
       "installNodePack": "Install node pack",
       "unknownPack": "Unknown pack",