Re: With new Let's Encrypt certificate, "Check For Update" failed.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
Please try to connect to thehttps://winscp.net/
, as if it were a WebDAV server and attach a Debug-2 level session log file.
https://winscp.net/
, as if it were a WebDAV server and attach a Debug-2 level session log file.
Thanks for your report.
Is it Windows 10? What build?
I cannot reproduce the problem.
Does your web browser (which one?) trust the new certificate? Try the Edge or Internet Explorer too.