SFTP won't connect to server in UEStudio version 2025.1.0.20 64-bit (solved)

billtepe · PostOct 25, 2025#12025-10-25T17:16+00:00

Hello,

I just upgraded to version 2025.1.0.20 64-bit and now an SFTP connection that was working in UEStudio is no longer in this new version.

I'm not very versed in SFTP... and I have not been able to find any solution to the problem. Like I said, it worked prior to upgrading.

Any help would be very much appreciated.

Here is the Output Window info from trying to connect:

Account: ********
Protocol: SFTP
Port: 22
User name: *******
Server Type Setting: Auto
Passive transfers (for firewalls) Setting: 0
Transfer Mode: Binary
wodFtpDLXUE64.dll path: C:\Program Files\IDM Computer Solutions\Common\wodFtpDLXUE64.dll
wodFtpDLXUE64.dll file version: 3.6.1.821
wodCertificateUE64.dll path: C:\Program Files\IDM Computer Solutions\Common\wodCertificateUE64.dll
wodCertificateUE64.dll file version: 1.8.1.27
OnConnected(30011, Invalid data received from remote server. Protocol error.)

Mofi · PostOct 25, 2025#22025-10-25T18:08+00:00

The wodSFTP help - Error list does not have more information about this error. It looks like the remote server has really sent invalid data and the updated SFTP client installed with UE 2025.1 does not anymore tolerate it or the updated SFTP client has a bug.

You could enable Show FTP log in output window at Advanced - Settings or Configuration - FTP and try the connection establishment again. You see perhaps more in that log. You could also check if there is an update for the SFTP service on the remote device and install that update if you have administrator privileges for the device running the SFTP server service.

But I think, you must most likely contact UltraEdit support by email and ask for help. It is perhaps necessary to give the UltraEdit support the necessary SFTP account access data like user name and password and/or the public key file which is passed by UltraEdit support to an UltraEdit developer to further analyze this protocol error by a developer if the remote device is accessible at all over the Internet.

You could replace as workaround the two DLL files manually by the former versions installed with UltraEdit 2025.0.0.39. UltraEdit support could mail them to you. I have these two DLLs also archived and could provide them too.

FlorianD · PostOct 28, 2025#32025-10-28T10:59+00:00

Hello,

Similar problem here, I am not able to connect anymore via FTP. Do you have an update on this?

billtepe · PostOct 28, 2025#42025-10-28T13:23+00:00

I ended up putting the WOD files from the older version into the new version and it is working again. I should have stated in my first post that I am trying to connect to an AWS Lightsail instance. So, I have virtually no ability to change anything on that side of things... at least to my knowledge.

So I copied from this folder on my old machine/UE version: \Program Files\IDM Computer Solutions\Common
these 2 files:

wodFtpDLXUE64.dll
wodCertificateUE64.dll

I renamed these files in the new machine/UE version. Then copied the 2 old files into the same folder on the new machine/UE Version.

I did have to change the security on that folder to allow me to paste the new files in.

To do that I:
Right click on COMMON folder
Choose PROPERTIES
Click on SECURITY
Click on EDIT
Scroll down to Users(your user id)
Click on USERS (your user id)
Click on ALLOW - "FULL CONTROL"
Click on APPLY button

Paste in the files, then if you want, reverse the security changes to put things back to the way they were.

Here is the entries I now have in the COMMON folder for wod files:

wodCertificateUE64.dll 7/6/2023 2:42 PM Application extension 2,765 KB
wodFtpDLXUE64.dll 9/10/2024 10:16 AM Application extension 3,844 KB
xx_NEW__wodCertificateUE64.dll 10/24/2025 10:40 AM Application extension 4,607 KB
xx_NEW__wodFtpDLXUE64.dll 10/24/2025 10:40 AM Application extension 6,232 KB

Mofi · PostOct 28, 2025#52025-10-28T16:55+00:00

Thanks, Bill. That is exactly what I would have also done if I would use FTP or FTPS or SFTP with UltraEdit/UEStudio and the connection establishment would not work anymore after the UltraEdit/UEStudio upgrade. The cause of the problem seems to be on client (UE/UES) side with the updated DLLs being much larger as the former versions of the two DLLs for unknown reasons although the versions changed only slightly.

Please do not forget to report this issue also by email to the UltraEdit support with the information about the workaround solution of using the former versions of the two DLLs. It is important that UltraEdit, Inc. support is informed about the SFTP connection establishment issue by users having this issue. There will be no change in a future version if nobody with such a connection establishment issue reports it.

It is important that a user having the issue reports it and not another user like me not using FTP/FTPS/SFTP feature of UltraEdit/UEStudio at all in case of an UE/UES developer looks into it, applies a fix, makes a user verification build of UltraEdit/UEStudio and the UltraEdit support sends an email to the issue reporter(s) with asking for the download and the installation of the UE/UES user verification build and a verification if the issue is indeed fixed with that UVB version. I could not verify the fix of the issue with an UE/UES UVB as I cannot reproduce the SFTP connection establishment issue. That is the reason why I do not report issues to UltraEdit support which are reported by others in the user-to-user forums which I cannot reproduce myself.

billtepe · PostOct 29, 2025#62025-10-29T18:21+00:00

@Mofi, I did as you requested and sent this to UD Tech Support.

Thanks for your help, it is much appreciated.

fgeurts · PostDec 14, 2025#72025-12-14T00:56+00:00

The latest UE and UES builds, release on 11 December include the following fixes, which appear to address the problems you've encountered.

UltraEdit 2025.1 Update 1 (2025.1.0.31 released on 2025-12-11)

Added FTP component selector to FTP account settings under the Advanced tab
- Select UltraEdit.wodFtpDLXComUE.1 (current) for latest FTP features
- Select UltraEdit.wodFtpDLXCom.1 (legacy) for older servers
Large file options text is clipped in German if path is too long
Failure to connect to older Linux servers using FTP
Unable to connect to certain mainframe servers
Sort returns “Sort error! Check sort parameters”
FTP Browser window hidden after invoking context menu
Restore previously supported SHIFT+F3 search functionality
Replace All in selected text (column mode) replaces text outside selection