<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 5.17.7

Error message:
Invalid access to memory.

Stack trace:
(00D5208C)
(00F8862A)
(00F8A692)
(00F8744C)
(00087E3F) ntdll.dll
(000732D1) ntdll.dll.KiUserExceptionDispatcher
(00D50FE3)
(00D87FEB)
(00CC2AC7)
(00CC27AF)
(00CBDC4A)
(00CBC445)
(000AC3C6)
(000AC1FE)
(000AB203)
(000AACD4)
(00102B43)
(00002658)
(00F8663D)
(00066C22) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00066BEF) ntdll.dll.RtlGetAppContainerNamedObjectPath

Status: unknown_rel_addr

The problem happens rarely. I cannot reproduce it.