Changes for Windows user account without profile log2timeline#4891

plaso/preprocessors/windows.py

@@ -902,25 +902,25 @@ def _ParseKey(self, mediator, registry_key, value_name):
     user_account = artifacts.UserAccountArtifact(
         identifier=registry_key.name, path_separator='\\')
 
-    # It has been observed that Azure Entra ID useraccount entries do not
-    # contain ProfileImagePath value.
-
-    username = None
-
     registry_value = registry_key.GetValueByName('ProfileImagePath')
     if registry_value:
       profile_path = registry_value.GetDataAsObject()
+
       username = self._GetUsernameFromProfilePath(profile_path)
+      if profile_path and not username:
+        mediator.ProducePreprocessingWarning(self.ARTIFACT_DEFINITION_NAME, (
+            f'Unable to determine username from profile path: '
+            f'"{profile_path!s}"'))
 
       user_account.user_directory = profile_path or None
       user_account.username = username or None
 
     try:
       mediator.AddUserAccount(user_account)
     except KeyError:
-      mediator.ProducePreprocessingWarning(
-          self.ARTIFACT_DEFINITION_NAME,
-          f'Unable to add user account: "{username!s}" to knowledge base')
+      mediator.ProducePreprocessingWarning(self.ARTIFACT_DEFINITION_NAME, (
+          f'Unable to add user account: "{user_account.identifier:s}" to '
+          f'knowledge base'))
 
 
 class WindowsWinDirEnvironmentVariablePlugin(