i think it's better to open a new ticket as to add to an other one.
Previous i add this issue to the ticket under https://winscp.net/forum/viewtopic.php?t=30267
When i start the WinSCP portable in the version 5.17.10(Build 11087) with a user account i get the error invalid characters in path.
With an adminstrator account i doesn't get this issus.
Is there any fix ?