diff --git a/CherryPy.conf b/CherryPy.conf
index 05614d7..78ca2c0 100644
--- a/CherryPy.conf
+++ b/CherryPy.conf
@@ -23,6 +23,7 @@ host_mobile: 'm.gutenberg.org'
 host_https:  1
 file_host:   'www.gutenberg.org'
 
+
 sqlalchemy.pool_size: 20
 sqlalchemy.max_overflow: 0
 sqlalchemy.timeout: 3
@@ -35,7 +36,7 @@ dropbox_client_secret: 'add secret in .autocat3 or /etc/autocat3.conf files'
 gdrive_client_id:      '586299000268.apps.googleusercontent.com'
 gdrive_client_secret:  'add secret in .autocat3 or /etc/autocat3.conf files'
 
-msdrive_client_id:     '0000000044111115'
+msdrive_client_id:     '6902b111-a9d6-461f-bd8a-83dafee3da66'
 msdrive_client_secret: 'add secret in .autocat3 or /etc/autocat3.conf files'
 
 recaptcha_public_key:  '6Lf0cpkUAAAAAIHB6OW_6H0SIqt5O2xmgsnF4Is8'
diff --git a/CloudStorage.py b/CloudStorage.py
index 054b481..14b7f5e 100644
--- a/CloudStorage.py
+++ b/CloudStorage.py
@@ -135,7 +135,7 @@ class CloudStorage (object):
     session_class   = CloudOAuth2Session
     user_agent      = None
     upload_endpoint = None
-    re_filename     = re.compile (r'[/\<>:"|?*]')
+    re_filename     = re.compile (r'[/\<>:"|?* ]')
 
 
     def __init__ (self):
diff --git a/MSDrive.py b/MSDrive.py
index c95c2f9..2c6ad3f 100644
--- a/MSDrive.py
+++ b/MSDrive.py
@@ -4,11 +4,10 @@
 """
 MSDrive.py
 
-Copyright 2014,15 by Marcello Perathoner
-
 Distributable under the GNU General Public License Version 3 or newer.
 
-The send-to-microsoft-drive pages.
+The send-to-onedrive pages using the Graph API
+https://docs.microsoft.com/en-us/graph/api/driveitem-createuploadsession?view=graph-rest-1.0
 
 """
 
@@ -18,8 +17,7 @@ from contextlib import closing
 
 import CloudStorage
 
-
-class MSDriveSession (CloudStorage.CloudOAuth2Session):
+class MSDriveSession(CloudStorage.CloudOAuth2Session):
     """ Hold parameters for OAuth. """
 
     #
@@ -28,29 +26,55 @@ class MSDriveSession (CloudStorage.CloudOAuth2Session):
     # http://msdn.microsoft.com/en-us/library/live/hh243649
     #
 
-    name_prefix           = 'msdrive'
-    oauth2_auth_endpoint  = 'https://login.microsoftonline.com/common/oauth2/v2.0/authorize'
+    name_prefix = 'msdrive'
+    oauth2_auth_endpoint = 'https://login.microsoftonline.com/common/oauth2/v2.0/authorize'
     oauth2_token_endpoint = 'https://login.microsoftonline.com/common/oauth2/v2.0/token'
-    oauth2_scope          = 'files.readwrite'
+    oauth2_scope = 'Files.ReadWrite'
 
-class MSDrive (CloudStorage.CloudStorage):
-    """ Send files to Microsoft Drive. """
+class MSDrive(CloudStorage.CloudStorage):
+    """ Send files to Microsoft OneDrive. """
 
-    name                  = 'OneDrive'
-    session_class         = MSDriveSession
-    user_agent            = 'PG2OneDrive/2019.0'
-    #upload_endpoint       = 'https://apis.live.net/v5.0/me/skydrive/files/'
-    upload_endpoint       = 'https://graph.microsoft.com/v1.0/me/drive/items/root:/{filename}:/createUploadSession'
+    name = 'OneDrive'
+    session_class = MSDriveSession
+    user_agent = 'PG2OneDrive/2019.0'
+    #upload_endpoint = 'https://apis.live.net/v5.0/me/skydrive/files/'
+    upload_endpoint = 'https://graph.microsoft.com/v1.0/me/drive/items/root:/Documents/Gutenberg/{filename}:/createUploadSession'
+    
 
 
-    def upload_file (self, session, request):
-        """ Upload a file to microsoft drive. """
+    def upload_file(self, session, response):
+        """ Upload a file to microsoft onedrive. """
+        filename = self.fix_filename(session.ebook.get_filename())
+        item_data = {
+            'name': filename,
+            'description': 'A Project Gutenberg Ebook',
+            "@microsoft.graph.conflictBehavior": "rename", 
+        }
+        filesize = int(response.headers['Content-Length'])
+        url = self.upload_endpoint.format(filename=filename)
+        chunk_size = 327680 # weird onedrive thing related to FAT tables
+        upload_data = session.post(url, json={'item': item_data}).json()
 
-        url = self.upload_endpoint.format(
-            {'filename': self.fix_filename (session.ebook.get_filename ())}
-        )
+        def headers(start, end, filesize):
+            return {
+                'Content-Length': str(end - start + 1),
+                'Content-Range': 'bytes {}-{}/{}'.format(start, end, filesize)
+            }
 
-        upload_session = session.post (url)
-        if 'uploadUrl' in upload_session:
-            with closing (session.put (upload_session['uploadUrl'], data = request.iter_content (1024 * 1024))) as r:
-                r.raise_for_status ()
+        if 'uploadUrl' in upload_data:
+            session_uri = upload_data['uploadUrl']
+            start = 0
+            end = min(chunk_size - 1, filesize - 1)
+
+            for chunk in response.iter_content(chunk_size):
+                r = session.put(
+                    session_uri,
+                    data=chunk,
+                    headers=headers(start, end, filesize),
+                )
+                start = start + chunk_size
+                end = min(end + chunk_size, filesize - 1)
+                r.raise_for_status()
+        else:
+            CloudStorage.log('no uploadUrl in %s' % upload_data)
+        session.close()