Can't ssh to cygwin after switching sign-in to Windows Hello PIN

Henry S. Thompson
Wed Sep 15 17:20:33 GMT 2021

Henry S. Thompson via Cygwin writes:

> Running cygwin 3.2.0-1 on Windows 10 Pro 21H1
> Since changing my login from local User to Windows Hello PIN, I can't
> ssh in to my machine using a password:  neither the PIN nor my old
> password work:
>   1) If from my machine I do
>           ssh -o PreferredAuthentications=password localhost
>      or
>           ssh -o PreferredAuthentications=password [me]@[host]
>      or
>           ssh -o PreferredAuthentications=password U-[HOST]\\[me]@[host]
>      I get "permission denied".
>   2) If I try any of those from another machine, it hangs (but works
>      w/o the "-o PreferredAuthentications=password", i.e. using a
>      key).  By 'hangs' I mean that having typed the PIN and Enter,
>      nothing happens, including no output if I include -v -v -v.

(2) turns out to have been a more pervasive problem with the mintty
instance I tested from.  Using a new instance the same fails as (1)

I'd be grateful if anyone who has switched to a Windows Hello Pin can
try to reproduce and report,


       Henry S. Thompson, School of Informatics, University of Edinburgh
      10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440
                Fax: (44) 131 650-4587, e-mail:
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