diff --git a/javascript/extensions.js b/javascript/extensions.js
index 9f5348a93..cec762f8b 100644
--- a/javascript/extensions.js
+++ b/javascript/extensions.js
@@ -36,7 +36,7 @@ function install_extension(button, url) {
 }
 
 function uninstall_extension(button, url) {
-  console.log('Extension uninstall:', url);
+  console.log('Extension uninstall:', url, decodeURIComponent(url), encodeURI(url));
   button.disabled = 'disabled';
   button.value = 'Uninstalling...';
   button.innerHTML = 'uninstalling';
diff --git a/modules/extensions.py b/modules/extensions.py
index 0cd8edacf..c0d9083ef 100644
--- a/modules/extensions.py
+++ b/modules/extensions.py
@@ -23,7 +23,7 @@ class Extension:
     def __init__(self, name, path, enabled=True, is_builtin=False):
         self.name = name
         self.git_name = ''
-        self.path = path
+        self.path = path.replace('\\', '/').rstrip('/')
         self.enabled = enabled
         self.status = ''
         self.can_update = False
diff --git a/modules/ui_extensions.py b/modules/ui_extensions.py
index b66ea82b1..28c1618dc 100644
--- a/modules/ui_extensions.py
+++ b/modules/ui_extensions.py
@@ -183,15 +183,26 @@ def install_extension(extension_to_install, search_text, sort_column):
 
 
 def uninstall_extension(extension_path, search_text, sort_column):
+    def errorRemoveReadonly(func, path, exc):
+        import stat
+        excvalue = exc[1]
+        shared.log.debug(f'Exception during cleanup: {func} {path} {excvalue.strerror}')
+        if func in (os.rmdir, os.remove, os.unlink) and excvalue.errno == errno.EACCES:
+            shared.log.debug(f'Retrying cleanup: {path}')
+            os.chmod(path, stat.S_IRWXU | stat.S_IRWXG | stat.S_IRWXO)
+            func(path)
+
     shared.log.info(f'Extension uninstall: {extension_path}')
     ext = [extension for extension in extensions.extensions if extension.path == extension_path]
     if len(ext) > 0 and os.path.isdir(extension_path):
         try:
-            shutil.rmtree(extension_path, ignore_errors=False)
+            shutil.rmtree(extension_path, ignore_errors=False, onerror=errorRemoveReadonly)
         except Exception as e:
             shared.log.warning(f'Extension uninstall failed: {extension_path} {e}')
         extensions.extensions = [extension for extension in extensions.extensions if extension.path != extension_path]
         update_extension_list()
+    else:
+        shared.log.warning(f'Extension uninstall cannot find extension: {extension_path}')
     code = refresh_extensions_list_from_data(search_text, sort_column)
     # return code, ext_table, message
     return code, f"Extension uninstalled: {extension_path} | Restart required"