Post a reply

Before posting, please read how to report bug or request support effectively.

Bug reports without an attached log file are usually useless.

Add an Attachment

If you do not want to add an Attachment to your Post, please leave the Fields blank.

(maximum 10 MB; please compress large files; only common media, archive, text and programming file formats are allowed)


Topic review


Re: I am experiencing the same issue

@glyn.andrews: Just upgrade to the latest version of WinSCP.

I am experiencing the same issue

I am also a Big Commerce user and have just downloaded WinSCP and am receiving the same error message when I try to login with my details. Any assistance would be gratefully received!

Same problem, any update?

I have this same problem and have also reverted back to 5.19.6.
5.21.1 has this same problem. I tried it, got the same error, reverted back to 5.19.6

Email sent. Thanks!

@MrWhipple: Thanks for your response.

Can you send me an email, so I can send you back a development version of WinSCP for testing? Please include a link back to this topic in your email. Also note in this topic that you have sent the email. Thanks.

You will find my address (if you log in) in my forum profile.

My username is my email address. It contains only ASCII characters in the original 128-character set, including @ (ASCII #64) and . (ASCII #46).

So does your username really contain non-ASCII characters? Were your given that username? Or did you chose it?

Absolutely. See attached.

A few items have been replaced by UPPERCASE TEXT for security. If I've deleted anything important to your analysis, let me know.

Re: WebDAV 5.21 authentication error "could not handle non-ASCII username in Digest challenge"

Thanks for your reports. Please post logs from 5.19.6 for comparison.

We are BigCommerce customer -
To the letter, experience the same issue and receive the same error messaging as the OP.
Attached log file following the same methodology specified by OP.

Edition: Windows 10 Enterprise
Version: 21H2
OS build: 19044.1706
Experience: Windows Feature Experience Pack 120.2212.4170.0
GUI: Explorer Interface

WebDAV 5.21 authentication error "could not handle non-ASCII username in Digest challenge"

I use WinSCP to connect via WebDAV to my employer's store on the BigCommerce ecommerce platform.

Starting with v. 5.21, when I try to connect, I receive the authentication error message,
Could not authenticate to server: could not handle non-ASCII username in Digest challenge / Connection failed

I rolled back to v. 5.19.6 and I'm able to authenticate without any problems.

I've attached my log file. I've replaced some sensitive data (store URL, username, etc.) with UPPERCASE GENERIC TEXT.

Additional info:

  • Microsoft Windows 10 Pro v. 10.0.19044 Build 19044
  • GUI w/Explorer interface