Invalid access to memory - _ne_strcasecmp

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.9.3

Error message:
Invalid access to memory.

Stack trace:
(00609AA1) _ne_strcasecmp
(00866422) C5073_3
(0086848A) ____ExceptionHandler
(00865244) __ExceptionHandler
(00081D3F) ntdll.dll
(0006F8EA) ntdll.dll.KiUserExceptionDispatcher
(00609BA9) _ne_uri_defaultport
(006BD1CB) NeonParseUrl
(0078DE2F) TWebDAVFileSystem::NeonOpen
(0078DD69) TWebDAVFileSystem::NeonClientOpenSessionInternal
(0078DC27) TWebDAVFileSystem::OpenUrl
(0078D8F4) TWebDAVFileSystem::Open
(007701B1) TTerminal::Open
(006C89EF) TTerminalThread::TerminalOpenEvent
(006C39C4) TSignalThread::Execute
(00098AD3) Userinterface::C20_0
(000152C2) KERNEL32.DLL.BaseThreadInitThunk
(0005FFD7) ntdll.dll
(0005FF9F) ntdll.dll
Connection failed.

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.17.10

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(00BC9CF9) _ne_strcasecmp
(00F8A13A) C5296_0
(00F8C1A2) ____ExceptionHandler
(00F88F5C) __ExceptionHandler
(0008776F) ntdll.dll
(00073E91) ntdll.dll.KiUserExceptionDispatcher
(00BC9E01) _ne_uri_defaultport
(00CAF07B) NeonParseUrl
(00DB4D4B) TWebDAVFileSystem::NeonOpen
(00DB4B7D) TWebDAVFileSystem::NeonClientOpenSessionInternal
(00DB4A3B) TWebDAVFileSystem::OpenUrl
(00DB4773) TWebDAVFileSystem::Open
(00D8B79C) TTerminal::Open
(00CC2CD3) TTerminalThread::TerminalOpenEvent
(00CBDC30) TSignalThread::Execute
(000BCFFF) Userinterface::C20_0
(0001EA27) KERNEL32.DLL.BaseThreadInitThunk
(00066A4C) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00066A19) ntdll.dll.RtlGetAppContainerNamedObjectPath
Не получается соединиться.

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.