diff --git a/src/ui/auth/Auth.tsx b/src/ui/auth/Auth.tsx
index 4ff8776f..7bbb7fa5 100644
--- a/src/ui/auth/Auth.tsx
+++ b/src/ui/auth/Auth.tsx
@@ -36,6 +36,10 @@ import { ElectronServerConfig as ServerConfigComponent } from "@/auth/ElectronSe
 import { ElectronLoginForm } from "@/auth/ElectronLoginForm";
 import { Checkbox } from "@/components/checkbox";
 import i18n from "@/i18n/i18n";
+import {
+  removeSilentSigninFromSearch,
+  shouldTriggerSilentSignin,
+} from "./silent-signin";
 
 const LANGUAGES = [
   { code: "en", label: "English" },
@@ -234,6 +238,8 @@ export function Auth({ onLogin }: AuthProps) {
   const [passwordLoginAllowed, setPasswordLoginAllowed] = useState(true);
   const [passwordResetAllowed, setPasswordResetAllowed] = useState(true);
   const [oidcConfigured, setOidcConfigured] = useState(false);
+  const [oidcConfigLoaded, setOidcConfigLoaded] = useState(false);
+  const silentSigninHandledRef = useRef(false);
   const [firstUser, setFirstUser] = useState(false);
   const [dbConnectionFailed, setDbConnectionFailed] = useState(false);
   const [dbHealthChecking, setDbHealthChecking] = useState(true);
@@ -262,7 +268,8 @@ export function Auth({ onLogin }: AuthProps) {
       .catch(() => setPasswordResetAllowed(false));
     getOIDCConfig()
       .then((res) => setOidcConfigured(!!res))
-      .catch(() => setOidcConfigured(false));
+      .catch(() => setOidcConfigured(false))
+      .finally(() => setOidcConfigLoaded(true));
   }, []);
 
   useEffect(() => {
@@ -643,7 +650,7 @@ export function Auth({ onLogin }: AuthProps) {
     }
   }
 
-  async function handleOIDCLogin() {
+  const handleOIDCLogin = useCallback(async () => {
     setOidcLoading(true);
     try {
       if (isElectron()) {
@@ -679,7 +686,27 @@ export function Auth({ onLogin }: AuthProps) {
       );
       setOidcLoading(false);
     }
-  }
+  }, [rememberMe, t]);
+
+  useEffect(() => {
+    if (!oidcConfigLoaded || silentSigninHandledRef.current) return;
+    if (!shouldTriggerSilentSignin(window.location.search)) return;
+
+    const nextSearch = removeSilentSigninFromSearch(window.location.search);
+    window.history.replaceState(
+      {},
+      document.title,
+      `${window.location.pathname}${nextSearch}${window.location.hash}`,
+    );
+
+    silentSigninHandledRef.current = true;
+    if (oidcConfigured && !isElectron()) {
+      handleOIDCLogin();
+      return;
+    }
+
+    toast.info(t("errors.silentSigninOidcUnavailable"));
+  }, [handleOIDCLogin, oidcConfigLoaded, oidcConfigured, t]);
 
   // Electron server config / webview auth success screens
   if (isElectron() && !isInElectronWebView()) {
diff --git a/src/ui/auth/LoginPage.tsx b/src/ui/auth/LoginPage.tsx
index 4818e3c5..0569958d 100644
--- a/src/ui/auth/LoginPage.tsx
+++ b/src/ui/auth/LoginPage.tsx
@@ -1,4 +1,4 @@
-import React, { useState, useEffect, useCallback } from "react";
+import React, { useState, useEffect, useCallback, useRef } from "react";
 import { Button } from "@/components/button.tsx";
 import { Input } from "@/components/input.tsx";
 import { PasswordInput } from "@/components/password-input.tsx";
@@ -31,6 +31,10 @@ import {
 } from "@/main-axios";
 import { ElectronServerConfig as ServerConfigComponent } from "@/auth/ElectronServerConfig.tsx";
 import { ElectronLoginForm } from "@/auth/ElectronLoginForm.tsx";
+import {
+  removeSilentSigninFromSearch,
+  shouldTriggerSilentSignin,
+} from "./silent-signin";
 
 function isMissingServerConfigError(error: unknown): boolean {
   if (!(error instanceof Error)) {
@@ -123,6 +127,8 @@ export function Auth({
   const [registrationAllowed, setRegistrationAllowed] = useState(true);
   const [passwordLoginAllowed, setPasswordLoginAllowed] = useState(true);
   const [oidcConfigured, setOidcConfigured] = useState(false);
+  const [oidcConfigLoaded, setOidcConfigLoaded] = useState(false);
+  const silentSigninHandledRef = useRef(false);
 
   const [resetStep, setResetStep] = useState<
     "initiate" | "verify" | "newPassword"
@@ -248,6 +254,9 @@ export function Auth({
         } else {
           setOidcConfigured(false);
         }
+      })
+      .finally(() => {
+        setOidcConfigLoaded(true);
       });
   }, []);
 
@@ -625,7 +634,7 @@ export function Auth({
     }
   }
 
-  async function handleOIDCLogin() {
+  const handleOIDCLogin = useCallback(async () => {
     setOidcLoading(true);
     try {
       const authResponse = await getOIDCAuthorizeUrl(rememberMe);
@@ -648,7 +657,27 @@ export function Auth({
       toast.error(errorMessage);
       setOidcLoading(false);
     }
-  }
+  }, [rememberMe, t]);
+
+  useEffect(() => {
+    if (!oidcConfigLoaded || silentSigninHandledRef.current) return;
+    if (!shouldTriggerSilentSignin(window.location.search)) return;
+
+    const nextSearch = removeSilentSigninFromSearch(window.location.search);
+    window.history.replaceState(
+      {},
+      document.title,
+      `${window.location.pathname}${nextSearch}${window.location.hash}`,
+    );
+
+    silentSigninHandledRef.current = true;
+    if (oidcConfigured && !isElectron()) {
+      handleOIDCLogin();
+      return;
+    }
+
+    toast.info(t("errors.silentSigninOidcUnavailable"));
+  }, [handleOIDCLogin, oidcConfigLoaded, oidcConfigured, t]);
 
   useEffect(() => {
     const urlParams = new URLSearchParams(window.location.search);
diff --git a/src/ui/auth/silent-signin.ts b/src/ui/auth/silent-signin.ts
new file mode 100644
index 00000000..60a1e754
--- /dev/null
+++ b/src/ui/auth/silent-signin.ts
@@ -0,0 +1,18 @@
+export function shouldTriggerSilentSignin(search: string) {
+  const params = new URLSearchParams(search);
+  for (const [key, rawValue] of params) {
+    if (key.toLowerCase() !== "silentsignin") continue;
+    const value = rawValue;
+    return value === "" || value === "true" || value === "1";
+  }
+  return false;
+}
+
+export function removeSilentSigninFromSearch(search: string) {
+  const params = new URLSearchParams(search);
+  for (const key of Array.from(params.keys())) {
+    if (key.toLowerCase() === "silentsignin") params.delete(key);
+  }
+  const nextSearch = params.toString();
+  return nextSearch ? `?${nextSearch}` : "";
+}
diff --git a/src/ui/locales/en.json b/src/ui/locales/en.json
index 8be051d5..62fe727a 100644
--- a/src/ui/locales/en.json
+++ b/src/ui/locales/en.json
@@ -1226,6 +1226,7 @@
     "failedCompleteReset": "Failed to complete password reset",
     "invalidTotpCode": "Invalid TOTP code",
     "failedOidcLogin": "Failed to start OIDC login",
+    "silentSigninOidcUnavailable": "Silent sign-in was requested, but OIDC login is not available.",
     "failedUserInfo": "Failed to get user info after login",
     "oidcAuthFailed": "OIDC authentication failed",
     "invalidAuthUrl": "Invalid authorization URL received from backend",
diff --git a/src/ui/locales/translated/zh_CN.json b/src/ui/locales/translated/zh_CN.json
index baa5e1bd..34fddb14 100644
--- a/src/ui/locales/translated/zh_CN.json
+++ b/src/ui/locales/translated/zh_CN.json
@@ -2336,6 +2336,7 @@
     "failedCompleteReset": "密码重置失败",
     "invalidTotpCode": "无效的 TOTP 代码",
     "failedOidcLogin": "OIDC 登录启动失败",
+    "silentSigninOidcUnavailable": "已请求静默登录，但当前未启用 OIDC 登录。",
     "failedUserInfo": "登录后无法获取用户信息",
     "oidcAuthFailed": "OIDC 身份验证失败",
     "noTokenReceived": "登录未收到令牌",