diff --git a/src/ansys/dpf/core/data_sources.py b/src/ansys/dpf/core/data_sources.py
index fb51f0a3db0..b8a5a80065c 100644
--- a/src/ansys/dpf/core/data_sources.py
+++ b/src/ansys/dpf/core/data_sources.py
@@ -25,7 +25,7 @@
 from __future__ import annotations
 
 import os
-from pathlib import Path
+from pathlib import Path, PurePosixPath, PureWindowsPath
 import traceback
 from typing import TYPE_CHECKING, Union
 import warnings
@@ -159,7 +159,9 @@ def set_result_file_path(
         ['...tmp...file.rst']
 
         """
-        filepath = Path(filepath)
+        filepath = (
+            PurePosixPath(filepath) if self._server.os == "posix" else PureWindowsPath(filepath)
+        )
         extension = filepath.suffix
         # Handle .res files from CFX
         if key == "" and extension == ".res":
@@ -290,7 +292,7 @@ def set_domain_result_file_path(
         >>> my_data_sources.set_domain_result_file_path(path='/tmp/file1.rst', key='rst', domain_id=1)
 
         """
-        path = Path(path)
+        path = PurePosixPath(path) if self._server.os == "posix" else PureWindowsPath(path)
         if key:
             self._api.data_sources_set_domain_result_file_path_with_key_utf8(
                 self, str(path), key, domain_id
@@ -341,7 +343,9 @@ def add_file_path(
         # The filename needs to be a fully qualified file name
         # if not os.path.dirname(filepath)
 
-        filepath = Path(filepath)
+        filepath = (
+            PurePosixPath(filepath) if self._server.os == "posix" else PureWindowsPath(filepath)
+        )
         if not filepath.parent.name:
             # append local path
             filepath = Path.cwd() / filepath.name
@@ -391,7 +395,9 @@ def add_domain_file_path(
 
         """
         # The filename needs to be a fully qualified file name
-        filepath = Path(filepath)
+        filepath = (
+            PurePosixPath(filepath) if self._server.os == "posix" else PureWindowsPath(filepath)
+        )
         if not filepath.parent.name:
             # append local path
             filepath = Path.cwd() / filepath.name
@@ -424,7 +430,9 @@ def add_file_path_for_specified_result(
             The default is ``""``, in which case the key is found directly.
         """
         # The filename needs to be a fully qualified file name
-        filepath = Path(filepath)
+        filepath = (
+            PurePosixPath(filepath) if self._server.os == "posix" else PureWindowsPath(filepath)
+        )
         if not filepath.parent.name:
             # append local path
             filepath = Path.cwd() / filepath.name
diff --git a/src/ansys/dpf/core/model.py b/src/ansys/dpf/core/model.py
index 95ca7709962..0ae5cfbff61 100644
--- a/src/ansys/dpf/core/model.py
+++ b/src/ansys/dpf/core/model.py
@@ -429,11 +429,11 @@ def streams_provider(self):
         return self._stream_provider
 
     def _set_data_sources(self, var_inp):
-        from pathlib import Path
+        from pathlib import PurePath
 
         if isinstance(var_inp, dpf.core.DataSources):
             self._data_sources = var_inp
-        elif isinstance(var_inp, (str, Path)):
+        elif isinstance(var_inp, (str, PurePath)):
             self._data_sources = DataSources(var_inp, server=self._server)
         else:
             self._data_sources = DataSources(server=self._server)