400 Bad Request Error When Connecting to Pikpak via WebDAV in Cyberduck

[sH1222J]

Hello,

I would like to report an issue I encountered while using Cyberduck with the WebDAV protocol.

■ Issue Description
I attempted to connect to Pikpak using WebDAV in Cyberduck, but the connection fails with the following error message:

Compatibility failure
Unexpected response (400 Bad Request).
Please contact your web hosting service provider for assistance.
■ Additional Information
While searching for similar cases, I found a related GitHub discussion with the same symptoms:
(Reported on July 23, 2024, and as of November 2025, it still appears unresolved.)
#16167

■ Environment Details
Operating System: Windows 11 23H2 x64

Protocol: WebDAV (HTTP)

Cyberduck Version: 9.2.4 (43667)

Target Service: Pikpak WebDAV

■ Attachments
cyberduck.log

I have included the log file to help with the investigation.
Please let me know if you need any additional information.

Thank you.