# WebVisu: Login Required When FileTransferServices Is Enabled **URL:** \ **Category:** CODESYS\ **Created:** [August 14, 2026, 8:58am UTC](https://www.wago.community/t/webvisu-login-required-when-filetransferservices-is-enabled/2846 "2026-08-14T08:58:55Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![lorenzo](https://avatars.discourse-cdn.com/v4/letter/l/4da419/32.png) [@lorenzo](https://www.wago.community/u/lorenzo)\ **Post date:** [August 14, 2026, 8:58am UTC](https://www.wago.community/t/webvisu-login-required-when-filetransferservices-is-enabled/2846/1 "2026-08-14T08:58:55Z")
Hello everybody, I have a configuration with a PFC300 and a WP400. I need to enable user/password management to prevent unauthorized PLC downloads. At the same time, I have enabled the following setting in the CODESYS configuration: CmpWebServerHandlerV3 AllowFileTransferServices=1 because I need to download some files from the PLC through a WebVisu client. When this setting is enabled, the client is prompted for login credentials at startup. Is it possible to remove this login request while still keeping user management enabled to prevent unauthorized PLC access? Does anyone have any ideas or suggestions? Regards, ![image](https://us1.discourse-cdn.com/flex016/uploads/wago/original/2X/0/0ec4a3527adfcac71b620020b49437e163ce407c.png) ---
**Author:** ![WagoIcard](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/wagoicard/32/1508_2.png) [@WagoIcard](https://www.wago.community/u/WagoIcard)\ **Post date:** [August 15, 2026, 3:53am UTC](https://www.wago.community/t/webvisu-login-required-when-filetransferservices-is-enabled/2846/2 "2026-08-15T03:53:33Z")
Hello what is the fw revision you are using ? I know some firmware had this option not working properly. ---
**Author:** ![lorenzo](https://avatars.discourse-cdn.com/v4/letter/l/4da419/32.png) [@lorenzo](https://www.wago.community/u/lorenzo)\ **Post date:** [August 15, 2026, 2:27pm UTC](https://www.wago.community/t/webvisu-login-required-when-filetransferservices-is-enabled/2846/3 "2026-08-15T14:27:02Z")
Hello, I am using the latest firmware version (FW31). The system stops working properly when I add `AllowFileTransferServices=1`. Do you have any idea what could be causing this issue? Thanks. ---
**Author:** ![WagoIcard](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/wagoicard/32/1508_2.png) [@WagoIcard](https://www.wago.community/u/WagoIcard)\ **Post date:** [August 19, 2026, 12:17am UTC](https://www.wago.community/t/webvisu-login-required-when-filetransferservices-is-enabled/2846/4 "2026-08-19T00:17:41Z")
Where do you add this line ? (what the file name and path) ---
**Author:** ![lorenzo](https://avatars.discourse-cdn.com/v4/letter/l/4da419/32.png) [@lorenzo](https://www.wago.community/u/lorenzo)\ **Post date:** [August 19, 2026, 5:50am UTC](https://www.wago.community/t/webvisu-login-required-when-filetransferservices-is-enabled/2846/5 "2026-08-19T05:50:02Z")
I added the following configuration: CmpWebServerHandlerV3 AllowFileTransferServices=1 to: /etc/codesys3.d/RtsCore.cfg /etc/codesys3.d/CmpWSServer /etc/codesys3.d/CODESYSControl\_User I found this information in the discussion _“Saving / exporting file from web visualization (webvisu)”_ and the file export is now working correctly. Regards ---
**Author:** ![lorenzo](https://avatars.discourse-cdn.com/v4/letter/l/4da419/32.png) [@lorenzo](https://www.wago.community/u/lorenzo)\ **Post date:** [September 4, 2026, 11:04am UTC](https://www.wago.community/t/webvisu-login-required-when-filetransferservices-is-enabled/2846/6 "2026-09-04T11:04:19Z")
Does anyone have an idea how to solve this issue? File transfer works properly, but when I start the web visualization, a user login pop-up appears. I would like to remove the login request while keeping password protection for PLC modifications. Any suggestions? Regards, ---
**Author:** ![WagoIcard](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/wagoicard/32/1508_2.png) [@WagoIcard](https://www.wago.community/u/WagoIcard)\ **Post date:** [September 7, 2026, 8:08am UTC](https://www.wago.community/t/webvisu-login-required-when-filetransferservices-is-enabled/2846/7 "2026-09-07T08:08:29Z")
hello, I think this happen because of the file transfer system. Since you are using a direct transfer system without a possible check on the file content, a login is needed. Another thing you could do is: if the file is not big, use the streaming method instead. There is 2 method to do a file transfert from the webvisu. one is using file access from the webvisu, the other is using codesys program to stream the file.