diff --git a/packages/frontend-embed/src/components/EmCustomEmoji.vue b/packages/frontend-embed/src/components/EmCustomEmoji.vue
index 6d96f682e4a1..e4149cf363f3 100644
--- a/packages/frontend-embed/src/components/EmCustomEmoji.vue
+++ b/packages/frontend-embed/src/components/EmCustomEmoji.vue
@@ -29,7 +29,7 @@ import { customEmojisMap } from '@/custom-emojis.js';
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const props = defineProps<{
 	name: string;
diff --git a/packages/frontend-embed/src/components/EmInstanceTicker.vue b/packages/frontend-embed/src/components/EmInstanceTicker.vue
index 1fa101427682..6bea697a65fa 100644
--- a/packages/frontend-embed/src/components/EmInstanceTicker.vue
+++ b/packages/frontend-embed/src/components/EmInstanceTicker.vue
@@ -15,7 +15,7 @@ import { computed, inject } from 'vue';
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const props = defineProps<{
 	instance: {
diff --git a/packages/frontend/src/components/MkCropperDialog.vue b/packages/frontend/src/components/MkCropperDialog.vue
index 7879e1d982a4..ad85d030367d 100644
--- a/packages/frontend/src/components/MkCropperDialog.vue
+++ b/packages/frontend/src/components/MkCropperDialog.vue
@@ -44,7 +44,7 @@ import { i18n } from '@/i18n.js';
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const emit = defineEmits<{
 	(ev: 'ok', cropped: Misskey.entities.DriveFile): void;
diff --git a/packages/frontend/src/components/MkInstanceCardMini.vue b/packages/frontend/src/components/MkInstanceCardMini.vue
index 36827a0f3108..615289eda1aa 100644
--- a/packages/frontend/src/components/MkInstanceCardMini.vue
+++ b/packages/frontend/src/components/MkInstanceCardMini.vue
@@ -22,7 +22,7 @@ import { misskeyApiGet } from '@/scripts/misskey-api.js';
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const props = defineProps<{
 	instance: Misskey.entities.FederationInstance;
diff --git a/packages/frontend/src/components/MkInstanceTicker.vue b/packages/frontend/src/components/MkInstanceTicker.vue
index c7f4cbe65ce1..a0f9ac84edbb 100644
--- a/packages/frontend/src/components/MkInstanceTicker.vue
+++ b/packages/frontend/src/components/MkInstanceTicker.vue
@@ -16,7 +16,8 @@ import { instanceName } from '@/config.js';
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const serverMetadata = inject(DI.serverMetadata)!;
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const props = defineProps<{
 	instance?: {
@@ -32,7 +33,7 @@ const instance = props.instance ?? {
 	themeColor: (document.querySelector('meta[name="theme-color-orig"]') as HTMLMetaElement).content,
 };
 
-const faviconUrl = computed(() => props.instance ? mediaProxy.getProxiedImageUrlNullable(props.instance.faviconUrl, 'preview') : mediaProxy.getProxiedImageUrlNullable(Instance.iconUrl, 'preview') ?? '/favicon.ico');
+const faviconUrl = computed(() => props.instance ? mediaProxy.getProxiedImageUrlNullable(props.instance.faviconUrl, 'preview') : mediaProxy.getProxiedImageUrlNullable(serverMetadata.iconUrl, 'preview') ?? '/favicon.ico');
 
 const themeColor = instance.themeColor ?? '#777777';
 
diff --git a/packages/frontend/src/components/MkMediaImage.vue b/packages/frontend/src/components/MkMediaImage.vue
index df13eb04b086..623857d9cb2e 100644
--- a/packages/frontend/src/components/MkMediaImage.vue
+++ b/packages/frontend/src/components/MkMediaImage.vue
@@ -62,7 +62,7 @@ import { $i, iAmModerator } from '@/account.js';
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const props = withDefaults(defineProps<{
 	image: Misskey.entities.DriveFile;
diff --git a/packages/frontend/src/components/MkMention.vue b/packages/frontend/src/components/MkMention.vue
index 6b6e911dec69..4322924d33b1 100644
--- a/packages/frontend/src/components/MkMention.vue
+++ b/packages/frontend/src/components/MkMention.vue
@@ -24,7 +24,7 @@ import { MkABehavior } from '@/components/global/MkA.vue';
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const props = defineProps<{
 	username: string;
diff --git a/packages/frontend/src/components/MkTimeline.vue b/packages/frontend/src/components/MkTimeline.vue
index bab93e40bc0f..caf25b8fa200 100644
--- a/packages/frontend/src/components/MkTimeline.vue
+++ b/packages/frontend/src/components/MkTimeline.vue
@@ -77,7 +77,7 @@ function prepend(note) {
 
 	tlNotesCount++;
 
-	if (instance.notesPerOneAd > 0 && tlNotesCount % instance.notesPerOneAd === 0) {
+	if (serverMetadata.notesPerOneAd > 0 && tlNotesCount % serverMetadata.notesPerOneAd === 0) {
 		note._shouldInsertAd_ = true;
 	}
 
diff --git a/packages/frontend/src/components/MkUserInfo.vue b/packages/frontend/src/components/MkUserInfo.vue
index e36988a21299..14c71c8ec613 100644
--- a/packages/frontend/src/components/MkUserInfo.vue
+++ b/packages/frontend/src/components/MkUserInfo.vue
@@ -46,7 +46,7 @@ import { defaultStore } from '@/store.js';
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 defineProps<{
 	user: Misskey.entities.UserDetailed;
diff --git a/packages/frontend/src/components/MkUserPopup.vue b/packages/frontend/src/components/MkUserPopup.vue
index 5829e8d1265c..f7a02aefb0a0 100644
--- a/packages/frontend/src/components/MkUserPopup.vue
+++ b/packages/frontend/src/components/MkUserPopup.vue
@@ -70,7 +70,7 @@ import { isFollowingVisibleForMe, isFollowersVisibleForMe } from '@/scripts/isFf
 import { DI } from '@/di.js';
 
 const serverMetadata = inject(DI.serverMetadata)!;
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const props = defineProps<{
 	showing: boolean;
diff --git a/packages/frontend/src/components/global/MkAvatar.vue b/packages/frontend/src/components/global/MkAvatar.vue
index c89dabd5ef13..4bf7bba20510 100644
--- a/packages/frontend/src/components/global/MkAvatar.vue
+++ b/packages/frontend/src/components/global/MkAvatar.vue
@@ -51,7 +51,7 @@ import { defaultStore } from '@/store.js';
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const animation = ref(defaultStore.state.animation);
 const squareAvatars = ref(defaultStore.state.squareAvatars);
diff --git a/packages/frontend/src/components/global/MkCustomEmoji.vue b/packages/frontend/src/components/global/MkCustomEmoji.vue
index 5d033f2a5baa..2602882fafcc 100644
--- a/packages/frontend/src/components/global/MkCustomEmoji.vue
+++ b/packages/frontend/src/components/global/MkCustomEmoji.vue
@@ -37,7 +37,7 @@ import MkCustomEmojiDetailedDialog from '@/components/MkCustomEmojiDetailedDialo
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const props = defineProps<{
 	name: string;
diff --git a/packages/frontend/src/pages/instance-info.vue b/packages/frontend/src/pages/instance-info.vue
index c8b43d71af1c..5e123e53e5e9 100644
--- a/packages/frontend/src/pages/instance-info.vue
+++ b/packages/frontend/src/pages/instance-info.vue
@@ -157,7 +157,7 @@ import MkTextarea from '@/components/MkTextarea.vue';
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const props = defineProps<{
 	host: string;
diff --git a/packages/frontend/src/pages/page.vue b/packages/frontend/src/pages/page.vue
index 6c8b9a41c192..5011968157bb 100644
--- a/packages/frontend/src/pages/page.vue
+++ b/packages/frontend/src/pages/page.vue
@@ -124,7 +124,7 @@ import { MenuItem } from '@/types/menu';
 import { DI } from '@/di.js';
 
 const serverMetadata = inject(DI.serverMetadata)!;
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const router = useRouter();
 
diff --git a/packages/frontend/src/pages/settings/index.vue b/packages/frontend/src/pages/settings/index.vue
index e05cc8592906..61eb45ef3e19 100644
--- a/packages/frontend/src/pages/settings/index.vue
+++ b/packages/frontend/src/pages/settings/index.vue
@@ -229,7 +229,7 @@ watch(router.currentRef, (to) => {
 	}
 });
 
-const emailNotConfigured = computed(() => instance.enableEmail && ($i.email == null || !$i.emailVerified));
+const emailNotConfigured = computed(() => serverMetadata.enableEmail && ($i.email == null || !$i.emailVerified));
 
 provideMetadataReceiver((metadataGetter) => {
 	const info = metadataGetter();
diff --git a/packages/frontend/src/pages/user/home.vue b/packages/frontend/src/pages/user/home.vue
index ec94782d9bcf..eb296342d190 100644
--- a/packages/frontend/src/pages/user/home.vue
+++ b/packages/frontend/src/pages/user/home.vue
@@ -178,7 +178,7 @@ import { useRouter } from '@/router/supplier.js';
 import { DI } from '@/di.js';
 
 const serverMetadata = inject(DI.serverMetadata)!;
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 function calcAge(birthdate: string): number {
 	const date = new Date(birthdate);
diff --git a/packages/frontend/src/pages/user/index.files.vue b/packages/frontend/src/pages/user/index.files.vue
index dc5ccda1f330..1cbead15b04f 100644
--- a/packages/frontend/src/pages/user/index.files.vue
+++ b/packages/frontend/src/pages/user/index.files.vue
@@ -44,7 +44,7 @@ import { i18n } from '@/i18n.js';
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const props = defineProps<{
 	user: Misskey.entities.UserDetailed;
diff --git a/packages/frontend/src/pages/welcome.entrance.a.vue b/packages/frontend/src/pages/welcome.entrance.a.vue
index 8fb628e92936..126676a8e044 100644
--- a/packages/frontend/src/pages/welcome.entrance.a.vue
+++ b/packages/frontend/src/pages/welcome.entrance.a.vue
@@ -48,7 +48,7 @@ import MkVisitorDashboard from '@/components/MkVisitorDashboard.vue';
 import { DI } from '@/di.js';
 
 const serverMetadata = inject(DI.serverMetadata)!;
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const instances = ref<Misskey.entities.FederationInstance[]>();
 
diff --git a/packages/frontend/src/ui/_common_/statusbar-federation.vue b/packages/frontend/src/ui/_common_/statusbar-federation.vue
index c32d48a79447..c3d2d44cf4f9 100644
--- a/packages/frontend/src/ui/_common_/statusbar-federation.vue
+++ b/packages/frontend/src/ui/_common_/statusbar-federation.vue
@@ -39,7 +39,7 @@ import { misskeyApi } from '@/scripts/misskey-api.js';
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const props = defineProps<{
 	display?: 'marquee' | 'oneByOne';
diff --git a/packages/frontend/src/widgets/WidgetFederation.vue b/packages/frontend/src/widgets/WidgetFederation.vue
index a9f752f9fc22..d21836914f82 100644
--- a/packages/frontend/src/widgets/WidgetFederation.vue
+++ b/packages/frontend/src/widgets/WidgetFederation.vue
@@ -58,7 +58,7 @@ const { widgetProps, configure } = useWidgetPropsManager(name,
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const instances = ref<Misskey.entities.FederationInstance[]>([]);
 const charts = ref<Misskey.entities.ChartsInstanceResponse[]>([]);
diff --git a/packages/frontend/src/widgets/WidgetInstanceCloud.vue b/packages/frontend/src/widgets/WidgetInstanceCloud.vue
index 26a259e12829..84f9fc58fc07 100644
--- a/packages/frontend/src/widgets/WidgetInstanceCloud.vue
+++ b/packages/frontend/src/widgets/WidgetInstanceCloud.vue
@@ -50,7 +50,7 @@ const { widgetProps, configure } = useWidgetPropsManager(name,
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const cloud = shallowRef<InstanceType<typeof MkTagCloud> | null>();
 const activeInstances = shallowRef<Misskey.entities.FederationInstance[] | null>(null);
diff --git a/packages/frontend/src/widgets/WidgetPhotos.vue b/packages/frontend/src/widgets/WidgetPhotos.vue
index 0e41f2be84b7..dcb08c61500f 100644
--- a/packages/frontend/src/widgets/WidgetPhotos.vue
+++ b/packages/frontend/src/widgets/WidgetPhotos.vue
@@ -58,7 +58,7 @@ const { widgetProps, configure } = useWidgetPropsManager(name,
 
 import { DI } from '@/di.js';
 
-const mediaProxy = inject(DI.mediaProxy);
+const mediaProxy = inject(DI.mediaProxy)!;
 
 const connection = useStream().useChannel('main');
 const images = ref<Misskey.entities.DriveFile[]>([]);