diff --git a/components/user/UserSignIn.vue b/components/user/UserSignIn.vue
index f64cdc7f..73adec4f 100644
--- a/components/user/UserSignIn.vue
+++ b/components/user/UserSignIn.vue
@@ -11,6 +11,8 @@ let knownServers = $ref<string[]>([])
 let autocompleteIndex = $ref(0)
 let autocompleteShow = $ref(false)
 
+const users = useUsers()
+
 async function oauth() {
   if (busy)
     return
@@ -28,6 +30,7 @@ async function oauth() {
     location.href = await (globalThis.$fetch as any)(`/api/${server || publicServer.value}/login`, {
       method: 'POST',
       body: {
+        force_login: users.value.some(u => u.server === server),
         origin: location.origin,
       },
     })
diff --git a/server/api/[server]/login.ts b/server/api/[server]/login.ts
index f01945eb..f80b2923 100644
--- a/server/api/[server]/login.ts
+++ b/server/api/[server]/login.ts
@@ -4,7 +4,7 @@ import { getApp, getRedirectURI } from '~/server/shared'
 
 export default defineEventHandler(async (event) => {
   let { server } = getRouterParams(event)
-  const { origin } = await readBody(event)
+  const { origin, force_login } = await readBody(event)
   server = server.toLocaleLowerCase().trim()
   const app = await getApp(origin, server)
 
@@ -17,6 +17,7 @@ export default defineEventHandler(async (event) => {
 
   const query = stringifyQuery({
     client_id: app.client_id,
+    force_login: force_login === true ? 'true' : 'false',
     scope: 'read write follow push',
     redirect_uri: getRedirectURI(origin, server),
     response_type: 'code',