diff --git a/services/dataService.ts b/services/dataService.ts
index 6da81c4..1bf592a 100644
--- a/services/dataService.ts
+++ b/services/dataService.ts
@@ -357,7 +357,11 @@ export const deleteTenant = async (id: string): Promise<boolean> => {
 
 // --- Auth Functions ---
 
+// Flag to prevent background fetches from throwing 401 and logging out during impersonation handoffs
+export let isReloadingForImpersonation = false;
+
 export const logout = () => {
+  if (isReloadingForImpersonation) return; // Prevent logout if we are just switching tokens
   localStorage.removeItem('ctms_token');
   localStorage.removeItem('ctms_user_id');
   localStorage.removeItem('ctms_tenant_id');
@@ -401,6 +405,8 @@ export const impersonateTenant = async (tenantId: string): Promise<any> => {
     throw new Error(errorData.error || 'Erro ao assumir identidade');
   }
 
+  isReloadingForImpersonation = true; // Block logouts
+
   const data = await response.json();
   const oldToken = localStorage.getItem('ctms_token');
   if (oldToken) {
@@ -421,6 +427,8 @@ export const returnToSuperAdmin = (): boolean => {
   const superAdminToken = localStorage.getItem('ctms_super_admin_token');
   if (superAdminToken) {
     try {
+      isReloadingForImpersonation = true; // Block logouts
+
       // Correctly decode Base64Url JWT payload with proper padding
       const base64Url = superAdminToken.split('.')[1];
       let base64 = base64Url.replace(/-/g, '+').replace(/_/g, '/');
@@ -443,6 +451,7 @@ export const returnToSuperAdmin = (): boolean => {
       window.location.reload();
       return true;
     } catch (e) {
+      isReloadingForImpersonation = false;
       console.error("Failed to restore super admin token", e);
       return false;
     }