diff --git a/desktop_env/envs/__init__.py b/desktop_env/envs/__init__.py
index b049d50..24a5b37 100644
--- a/desktop_env/envs/__init__.py
+++ b/desktop_env/envs/__init__.py
@@ -12,7 +12,7 @@ import psutil
 import requests
 from tqdm import tqdm
 
-__version__ = "0.1.12"
+__version__ = "0.1.15"
 
 MAX_RETRY_TIMES = 10
 UBUNTU_ARM_URL = "https://huggingface.co/datasets/xlangai/ubuntu_arm/resolve/main/Ubuntu.zip"
@@ -78,10 +78,16 @@ class VirtualMachineManager:
             active_pids = {p.pid for p in psutil.process_iter()}
             new_lines = []
             vm_paths = []
+
             with open(self.registry_path, 'r') as file:
                 lines = file.readlines()
                 for line in lines:
                     vm_path, pid_str = line.strip().split('|')
+                    if not os.path.exists(vm_path):
+                        print(f"VM {vm_path} not found, releasing it.")
+                        new_lines.append(f'{vm_path}|free\n')
+                        continue
+
                     vm_paths.append(vm_path)
                     if pid_str == "free":
                         new_lines.append(line)