diff --git a/examples/bluetooth/bluedroid/ble/blufi/main/blufi_example_main.c b/examples/bluetooth/bluedroid/ble/blufi/main/blufi_example_main.c
index c25e5c2fdb..f33a2125aa 100644
--- a/examples/bluetooth/bluedroid/ble/blufi/main/blufi_example_main.c
+++ b/examples/bluetooth/bluedroid/ble/blufi/main/blufi_example_main.c
@@ -371,7 +371,7 @@ static void example_event_callback(esp_blufi_cb_event_t event, esp_blufi_cb_para
             .channel = 0,
             .show_hidden = false
         };
-        ESP_ERROR_CHECK(esp_wifi_scan_start(&scanConf, true));
+        esp_wifi_scan_start(&scanConf, true);
         break;
     }
     case ESP_BLUFI_EVENT_RECV_CUSTOM_DATA:
diff --git a/examples/bluetooth/esp_ble_mesh/ble_mesh_coex_test/components/case/wifi_connect.c b/examples/bluetooth/esp_ble_mesh/ble_mesh_coex_test/components/case/wifi_connect.c
index 720a532f6e..6096d75bcc 100644
--- a/examples/bluetooth/esp_ble_mesh/ble_mesh_coex_test/components/case/wifi_connect.c
+++ b/examples/bluetooth/esp_ble_mesh/ble_mesh_coex_test/components/case/wifi_connect.c
@@ -93,11 +93,7 @@ static void on_wifi_disconnect(void *arg, esp_event_base_t event_base,
                                int32_t event_id, void *event_data)
 {
     ESP_LOGI(TAG, "Wi-Fi disconnected, trying to reconnect...");
-    esp_err_t err = esp_wifi_connect();
-    if (err == ESP_ERR_WIFI_NOT_STARTED) {
-        return;
-    }
-    ESP_ERROR_CHECK(err);
+    esp_wifi_connect();
 }
 
 static void start(const char *ssid, const char *passwd)
@@ -133,7 +129,7 @@ static void start(const char *ssid, const char *passwd)
     ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
     ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config));
     ESP_ERROR_CHECK(esp_wifi_start());
-    ESP_ERROR_CHECK(esp_wifi_connect());
+    esp_wifi_connect();
     s_connection_name = ssid;
 }
 
diff --git a/examples/bluetooth/esp_ble_mesh/ble_mesh_wifi_coexist/components/iperf/cmd_wifi.c b/examples/bluetooth/esp_ble_mesh/ble_mesh_wifi_coexist/components/iperf/cmd_wifi.c
index 28548c1ec3..48eebe360d 100644
--- a/examples/bluetooth/esp_ble_mesh/ble_mesh_wifi_coexist/components/iperf/cmd_wifi.c
+++ b/examples/bluetooth/esp_ble_mesh/ble_mesh_wifi_coexist/components/iperf/cmd_wifi.c
@@ -167,7 +167,7 @@ static bool wifi_cmd_sta_join(const char *ssid, const char *pass)
     esp_wifi_disconnect();
     //ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) ); //by snake
     ESP_ERROR_CHECK( esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
-    ESP_ERROR_CHECK( esp_wifi_connect() );
+    esp_wifi_connect();
 
     xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT, 0, 1, 5000 / portTICK_RATE_MS);
 
@@ -194,7 +194,7 @@ static bool wifi_cmd_sta_scan(const char *ssid)
     scan_config.ssid = (uint8_t *) ssid;
 
     ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
-    ESP_ERROR_CHECK( esp_wifi_scan_start(&scan_config, false) );
+    esp_wifi_scan_start(&scan_config, false);
 
     return true;
 }
diff --git a/examples/common_components/protocol_examples_common/connect.c b/examples/common_components/protocol_examples_common/connect.c
index e1d4d220a2..36be310a1a 100644
--- a/examples/common_components/protocol_examples_common/connect.c
+++ b/examples/common_components/protocol_examples_common/connect.c
@@ -257,7 +257,7 @@ static esp_netif_t* wifi_start(void)
     ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
     ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config));
     ESP_ERROR_CHECK(esp_wifi_start());
-    ESP_ERROR_CHECK(esp_wifi_connect());
+    esp_wifi_connect();
     return netif;
 }
 
diff --git a/examples/mesh/manual_networking/main/mesh_main.c b/examples/mesh/manual_networking/main/mesh_main.c
index cf788d83aa..6bf136e044 100644
--- a/examples/mesh/manual_networking/main/mesh_main.c
+++ b/examples/mesh/manual_networking/main/mesh_main.c
@@ -136,7 +136,7 @@ void mesh_scan_done_handler(int num)
         esp_wifi_scan_stop();
         scan_config.show_hidden = 1;
         scan_config.scan_type = WIFI_SCAN_TYPE_PASSIVE;
-        ESP_ERROR_CHECK(esp_wifi_scan_start(&scan_config, 0));
+        esp_wifi_scan_start(&scan_config, 0);
     }
 }
 
@@ -157,7 +157,7 @@ void mesh_event_handler(void *arg, esp_event_base_t event_base,
         /* mesh softAP is hidden */
         scan_config.show_hidden = 1;
         scan_config.scan_type = WIFI_SCAN_TYPE_PASSIVE;
-        ESP_ERROR_CHECK(esp_wifi_scan_start(&scan_config, 0));
+        esp_wifi_scan_start(&scan_config, 0);
     }
     break;
     case MESH_EVENT_STOPPED: {
@@ -228,7 +228,7 @@ void mesh_event_handler(void *arg, esp_event_base_t event_base,
             esp_wifi_scan_stop();
             scan_config.show_hidden = 1;
             scan_config.scan_type = WIFI_SCAN_TYPE_PASSIVE;
-            ESP_ERROR_CHECK(esp_wifi_scan_start(&scan_config, 0));
+            esp_wifi_scan_start(&scan_config, 0);
         }
     }
     break;
diff --git a/examples/system/console/main/cmd_wifi.c b/examples/system/console/main/cmd_wifi.c
index e0751e476d..014d1918d7 100644
--- a/examples/system/console/main/cmd_wifi.c
+++ b/examples/system/console/main/cmd_wifi.c
@@ -72,7 +72,7 @@ static bool wifi_join(const char *ssid, const char *pass, int timeout_ms)
 
     ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
     ESP_ERROR_CHECK( esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
-    ESP_ERROR_CHECK( esp_wifi_connect() );
+    esp_wifi_connect();
 
     int bits = xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT,
                                    pdFALSE, pdTRUE, timeout_ms / portTICK_PERIOD_MS);
diff --git a/examples/wifi/iperf/main/cmd_wifi.c b/examples/wifi/iperf/main/cmd_wifi.c
index 766163324f..94aaaf2c52 100644
--- a/examples/wifi/iperf/main/cmd_wifi.c
+++ b/examples/wifi/iperf/main/cmd_wifi.c
@@ -159,7 +159,7 @@ static bool wifi_cmd_sta_join(const char* ssid, const char* pass)
     reconnect = true;
     ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
     ESP_ERROR_CHECK( esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
-    ESP_ERROR_CHECK( esp_wifi_connect() );
+    esp_wifi_connect();
 
     xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT, 0, 1, 5000/portTICK_RATE_MS);
 
@@ -186,7 +186,7 @@ static bool wifi_cmd_sta_scan(const char* ssid)
     scan_config.ssid = (uint8_t *) ssid;
 
     ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
-    ESP_ERROR_CHECK( esp_wifi_scan_start(&scan_config, false) );
+    esp_wifi_scan_start(&scan_config, false);
 
     return true;
 }
diff --git a/examples/wifi/scan/main/scan.c b/examples/wifi/scan/main/scan.c
index 15edb4b831..3ac8230ade 100644
--- a/examples/wifi/scan/main/scan.c
+++ b/examples/wifi/scan/main/scan.c
@@ -124,7 +124,7 @@ static void wifi_scan(void)
 
     ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
     ESP_ERROR_CHECK(esp_wifi_start());
-    ESP_ERROR_CHECK(esp_wifi_scan_start(NULL, true));
+    esp_wifi_scan_start(NULL, true);
     ESP_ERROR_CHECK(esp_wifi_scan_get_ap_records(&number, ap_info));
     ESP_ERROR_CHECK(esp_wifi_scan_get_ap_num(&ap_count));
     ESP_LOGI(TAG, "Total APs scanned = %u", ap_count);
@@ -137,7 +137,6 @@ static void wifi_scan(void)
         }
         ESP_LOGI(TAG, "Channel \t\t%d\n", ap_info[i].primary);
     }
-
 }
 
 void app_main(void)
diff --git a/examples/wifi/smart_config/main/smartconfig_main.c b/examples/wifi/smart_config/main/smartconfig_main.c
index b8a668c3f1..d02cdafd6a 100644
--- a/examples/wifi/smart_config/main/smartconfig_main.c
+++ b/examples/wifi/smart_config/main/smartconfig_main.c
@@ -70,7 +70,7 @@ static void event_handler(void* arg, esp_event_base_t event_base,
 
         ESP_ERROR_CHECK( esp_wifi_disconnect() );
         ESP_ERROR_CHECK( esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
-        ESP_ERROR_CHECK( esp_wifi_connect() );
+        esp_wifi_connect();
     } else if (event_base == SC_EVENT && event_id == SC_EVENT_SEND_ACK_DONE) {
         xEventGroupSetBits(s_wifi_event_group, ESPTOUCH_DONE_BIT);
     }
diff --git a/examples/wifi/wps/main/wps.c b/examples/wifi/wps/main/wps.c
index edf87ae54a..662912c064 100644
--- a/examples/wifi/wps/main/wps.c
+++ b/examples/wifi/wps/main/wps.c
@@ -64,7 +64,7 @@ static void wifi_event_handler(void* arg, esp_event_base_t event_base,
         case WIFI_EVENT_STA_DISCONNECTED:
             ESP_LOGI(TAG, "WIFI_EVENT_STA_DISCONNECTED");
             if (s_retry_num < MAX_RETRY_ATTEMPTS) {
-                ESP_ERROR_CHECK(esp_wifi_connect());
+                esp_wifi_connect();
                 s_retry_num++;
             } else if (ap_idx < s_ap_creds_num) {
                 /* Try the next AP credential if first one fails */
@@ -73,7 +73,7 @@ static void wifi_event_handler(void* arg, esp_event_base_t event_base,
                     ESP_LOGI(TAG, "Connecting to SSID: %s, Passphrase: %s",
                              wps_ap_creds[ap_idx].sta.ssid, wps_ap_creds[ap_idx].sta.password);
                     ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wps_ap_creds[ap_idx++]) );
-                    ESP_ERROR_CHECK(esp_wifi_connect());
+                    esp_wifi_connect();
                 }
                 s_retry_num = 0;
             } else {
@@ -107,7 +107,7 @@ static void wifi_event_handler(void* arg, esp_event_base_t event_base,
                  * with legacy apps. So directly attempt connection here.
                  */
                 ESP_ERROR_CHECK(esp_wifi_wps_disable());
-                ESP_ERROR_CHECK(esp_wifi_connect());
+                esp_wifi_connect();
             }
             break;
         case WIFI_EVENT_STA_WPS_ER_FAILED: