diff --git a/connectors/sources/sharepoint_server.py b/connectors/sources/sharepoint_server.py
index 10fd8cf0f..d5075ddaa 100644
--- a/connectors/sources/sharepoint_server.py
+++ b/connectors/sources/sharepoint_server.py
@@ -78,10 +78,10 @@
     SITE: "{parent_site_url}/_api/web",
     SITES: "{parent_site_url}/_api/web/webs?$skip={skip}&$top={top}",
     LISTS: "{parent_site_url}/_api/web/lists?$skip={skip}&$top={top}&$expand=RootFolder&$filter=(Hidden eq false)",
-    ATTACHMENT: "{value}/_api/web/GetFileByServerRelativeUrl('{file_relative_url}')/$value",
+    ATTACHMENT: "{value}/_api/web/GetFileByServerRelativePath(decodedUrl='{file_relative_url}')/$value",
     DRIVE_ITEM: "{parent_site_url}/_api/web/lists(guid'{list_id}')/items?$select={selected_field}&$expand=File,Folder,Author,Editor&$top={top}",
     LIST_ITEM: "{parent_site_url}/_api/web/lists(guid'{list_id}')/items?$expand=AttachmentFiles,Author,Editor&$select=*,FileRef,Author/Title,Editor/Title",
-    ATTACHMENT_DATA: "{parent_site_url}/_api/web/getfilebyserverrelativeurl('{file_relative_url}')",
+    ATTACHMENT_DATA: "{parent_site_url}/_api/web/getfilebyserverrelativepath(decodedUrl='{file_relative_url}')",
     USERS: "{parent_site_url}/_api/web/siteusers?$skip={skip}&$top={top}",
     ADMIN_USERS: "{parent_site_url}/_api/web/siteusers?$skip={skip}&$top={top}&$filter=IsSiteAdmin eq true",
     ROLES: "{parent_site_url}/_api/web/roleassignments?$expand=Member/users,RoleDefinitionBindings&$skip={skip}&$top={top}",