diff --git a/.changeset/fix-oidc-account-switcher.md b/.changeset/fix-oidc-account-switcher.md
new file mode 100644
index 000000000..2e652f090
--- /dev/null
+++ b/.changeset/fix-oidc-account-switcher.md
@@ -0,0 +1,5 @@
+---
+default: patch
+---
+
+Fix account switching and logging in with multiple (SSO) accounts silently failing
diff --git a/src/app/pages/Router.tsx b/src/app/pages/Router.tsx
index aec62cc86..56c24a899 100644
--- a/src/app/pages/Router.tsx
+++ b/src/app/pages/Router.tsx
@@ -119,6 +119,7 @@ export const createRouter = (clientConfig: ClientConfig, screenSize: ScreenSize)
           // Allow reaching the login page with ?addAccount=1 even when already logged in
           const url = new URL(request.url);
           if (url.searchParams.get('addAccount') === '1') return null;
+          if (url.searchParams.has('loginToken')) return null;
           if (hasStoredSession()) return redirect(getHomePath());
           return null;
         }}