diff --git a/cf_remote/commands.py b/cf_remote/commands.py
index 2fceb1d..4927fbf 100644
--- a/cf_remote/commands.py
+++ b/cf_remote/commands.py
@@ -328,7 +328,6 @@ def spawn(
     public_ip=True,
     extend_group=False,
 ):
-
     if os.path.exists(CLOUD_CONFIG_FPATH):
         creds_data = read_json(CLOUD_CONFIG_FPATH)
     else:
@@ -392,17 +391,21 @@ def spawn(
         )
     print("Spawning VMs...", end="")
     sys.stdout.flush()
-    vms = spawn_vms(
-        requests,
-        creds,
-        region,
-        key_pair,
-        security_groups=sec_groups,
-        provider=provider,
-        network=network,
-        role=role,
-        spawned_cb=print_progress_dot,
-    )
+    try:
+        vms = spawn_vms(
+            requests,
+            creds,
+            region,
+            key_pair,
+            security_groups=sec_groups,
+            provider=provider,
+            network=network,
+            role=role,
+            spawned_cb=print_progress_dot,
+        )
+    except ValueError as e:
+        print("Failed to spawn VMs with following error:\n" + str(e))
+        return 1
     print("DONE")
 
     if public_ip and (not all(vm.public_ips for vm in vms)):
diff --git a/cf_remote/spawn.py b/cf_remote/spawn.py
index c785592..e4350c8 100644
--- a/cf_remote/spawn.py
+++ b/cf_remote/spawn.py
@@ -4,6 +4,7 @@
 from enum import Enum
 from multiprocessing.dummy import Pool
 
+from libcloud.common.types import InvalidCredsError
 from libcloud.compute.types import Provider
 from libcloud.compute.providers import get_driver
 from libcloud.compute.base import NodeSize, NodeImage
@@ -307,9 +308,14 @@ def spawn_vm_in_aws(
     size=None,
     role=None,
 ):
-    driver = get_cloud_driver(Providers.AWS, aws_creds, region)
-    existing_vms = driver.list_nodes()
-
+    try:
+        driver = get_cloud_driver(Providers.AWS, aws_creds, region)
+        existing_vms = driver.list_nodes()
+    except InvalidCredsError as error:
+        raise ValueError(
+            "Invalid credentials, check cloud_config.json file, details: \n"
+            + str(error)
+        )
     if name is None:
         name = _get_unused_name(
             [vm.name for vm in existing_vms], platform, _NAME_RANDOM_PART_LENGTH
@@ -457,9 +463,6 @@ def spawn_vms(
                 req.size,
                 role,
             )
-            if spawned_cb is not None:
-                spawned_cb(vm)
-            ret.append(vm)
     else:
         tasks = [
             GCPSpawnTask(