FTP connection is closed immediately and user got "Access denided" for network credential popupRSS

• • Reply
  judith815

  1 Post

  FTP connection is closed immediately and user got "Access denided" for network credential popup

  Nov 13, 2020 03:55 PM|judith815|LINK

  We have an issue for "Access Denied" for window credential popup when a user tries to access to the local NAS shared folder from the user computer. The issue is occasionally happened again and again. Usually when the service is normal there is no windows security credential popup. But when the user can't access to the shared folder, they face to ask windows security credential. Besides, the user type the correct ID/PW for the user credential popup, but they get the "Access Denied" message. I don't know where or which configuration I have to check for the user issue. Here is the FTP log when the user has no issue to access to the shared folder from file explorer #Fields: date time c-ip cs-username s-ip s-port cs-method cs-uri-stem sc-status sc-win32-status sc-substatus x-session x-fullpath 2020-11-13 13:09:44 10. - 10. 22 ControlChannelOpened - - 0 0 c2b94809-83d2-4e65-b282-ff7411d5258a - 2020-11-13 13:09:44 10. - 10. 22 USER sap.project 331 0 0 c2b94809-83d2-4e65-b282-ff7411d5258a - 2020-11-13 13:09:44 10. VFS1\sap.project 10. 22 PASS *** 230 0 0 c2b94809-83d2-4e65-b282-ff7411d5258a / 2020-11-13 13:09:44 10. VFS1\sap.project 10. 22 TYPE I 200 0 0 c2b94809-83d2-4e65-b282-ff7411d5258a - 2020-11-13 13:09:44 10. VFS1\sap.project 10. 22 CWD INVOICE 250 0 0 c2b94809-83d2-4e65-b282-ff7411d5258a /INVOICE 2020-11-13 13:09:45 10. VFS1\sap.project 10. 22 CWD 5106047369 250 0 0 c2b94809-83d2-4e65-b282-ff7411d5258a /INVOICE/5106047369 2020-11-13 13:09:45 10. VFS1\sap.project 10. 22 CWD INVOICE_5106047369.pdf 550 3 0 c2b94809-83d2-4e65-b282-ff7411d5258a /INVOICE/5106047369/INVOICE_5106047369.pdf 2020-11-13 13:09:45 10. VFS1\sap.project 10. 22 XCWD INVOICE_5106047369.pdf 550 3 0 c2b94809-83d2-4e65-b282-ff7411d5258a /INVOICE/5106047369/INVOICE_5106047369.pdf 2020-11-13 13:09:46 10. VFS1\sap.project 10. 22 TYPE I 200 0 0 c2b94809-83d2-4e65-b282-ff7411d5258a - 2020-11-13 13:09:46 10. VFS1\sap.project 10. 22 PORT 10,42,44,45,244,200 200 0 0 c2b94809-83d2-4e65-b282-ff7411d5258a - 2020-11-13 13:09:46 10. VFS1\sap.project 10. 21 DataChannelOpened - - 0 0 c2b94809-83d2-4e65-b282-ff7411d5258a - 2020-11-13 13:09:46 10. VFS1\sap.project 10. 21 DataChannelClosed - - 0 0 c2b94809-83d2-4e65-b282-ff7411d5258a - 2020-11-13 13:09:46 10. VFS1\sap.project 10. 22 RETR INVOICE_5106047369.pdf 226 0 0 c2b94809-83d2-4e65-b282-ff7411d5258a /INVOICE/5106047369/INVOICE_5106047369.pdf 2020-11-13 13:09:48 10. VFS1\sap.project 10. 22 QUIT - 221 0 0 c2b94809-83d2-4e65-b282-ff7411d5258a - 2020-11-13 13:09:48 10. VFS1\sap.project 10. 22 ControlChannelClosed - - 0 0 c2b94809-83d2-4e65-b282-ff7411d5258a - Here is the FTP log when the user cannot access to the shared folder #Fields: date time c-ip cs-username s-ip s-port cs-method cs-uri-stem sc-status sc-win32-status sc-substatus x-session x-fullpath 2020-11-13 13:23:09 10. - 10. 22 ControlChannelOpened - - 0 0 709283f8-ac57-42ba-8db0-5f5c5cff0a36 - 2020-11-13 13:23:09 10. - 10. 22 USER sap.project 331 0 0 709283f8-ac57-42ba-8db0-5f5c5cff0a36 - 2020-11-13 13:23:09 10. VFS1\sap.project 10. 22 PASS *** 530 5 2 709283f8-ac57-42ba-8db0-5f5c5cff0a36 / 2020-11-13 13:23:09 10. - 10. 22 QUIT - 221 0 0 709283f8-ac57-42ba-8db0-5f5c5cff0a36 - 2020-11-13 13:23:09 10. - 10. 22 ControlChannelClosed - - 0 0 709283f8-ac57-42ba-8db0-5f5c5cff0a36 - 2020-11-13 13:29:37 10. - 10. 22 ControlChannelOpened - - 0 0 30e3910c-f23c-4909-bf45-5851873367b4 - 2020-11-13 13:29:37 10. - 10. 22 USER sap.project 331 0 0 30e3910c-f23c-4909-bf45-5851873367b4 - 2020-11-13 13:29:37 10. VFS1\sap.project 10. 22 PASS *** 530 5 2 30e3910c-f23c-4909-bf45-5851873367b4 / 2020-11-13 13:29:37 10. - 10. 22 QUIT - 221 0 0 30e3910c-f23c-4909-bf45-5851873367b4 - 2020-11-13 13:29:37 10. - 10. 22 ControlChannelClosed - - 0 0 30e3910c-f23c-4909-bf45-5851873367b4 -
• • Reply
  Jalpa Pancha...

  1594 Posts

  Re: FTP connection is closed immediately and user got "Access denided" for network credential pop...

  Nov 16, 2020 02:33 AM|Jalpa Panchal|LINK

  Hi,

  Is the user is an administrator? which authentication did you enable in iis? try to set the allow user in iis FTP authorization rule. check the user has enough permission to access the shared folder.

  You could refer to below links for more detail:

  https://docs.microsoft.com/en-us/iis/configuration/system.applicationhost/sites/site/ftpserver/userisolation/activedirectory

  https://docs.microsoft.com/en-us/iis/configuration/system.applicationHost/sites/site/ftpServer/userIsolation/

  https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/hh831589(v=ws.11)?redirectedfrom=MSDN#EditBasicAuthenticationSettings

  https://docs.microsoft.com/en-us/iis/configuration/system.applicationHost/sites/site/ftpServer/security/authentication/basicAuthentication

  https://techcommunity.microsoft.com/t5/iis-support-blog/ftp-530-user-cannot-log-in-error-and-solution/ba-p/364570

  Regards,

  Jalpa

  .NET forums are moving to a new home on Microsoft Q&A, we encourage you to go to Microsoft Q&A for .NET for posting new questions and get involved today.