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File Permissions missing after ftp transfer.


We have a system that securely transfers files thru servers and to a target win 2008 server with ftp using windows IIS.

For some reason - the files that reach the destination ftp have a small 'lock' icon on them.
When looking in the file properties-security, I see that the file has no permissions:
"No permissions have been assigned for this object.".

Please help.

thank you
Microsoft IIS Web ServerWindows Server 2008Security

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8/22/2022 - Mon
Berkson Wein

What server are you using to FTP?

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Thank you.
[I am using windows iis as server and our program as client]

When I try to enable inheritance I get an error:
"the access control list (ACL) structure is invalid".

what does this mean and how can I prevent this from happening in the future?

thank you

Also- why did this happen?

thank you
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Walt Forbes

Try to take ownership of the top folder first, then test if you can set permissions on top folder and propogate it to all subfolders and files by selecting replace permissions option in advanced security permissions

Ok that works.

Why did this happen in the first place, and how can I prevent this problem from occurring again in other computers?

Wrong folder permissions can cause this type of issues

Some guidelines in order to avoid this problem in feature you might find useful

Do not grant users full control permissions on any shared folder (Shared or NTFS)
Remove inheritance (NTFS level) at 1st place at share root folder and keep only required users Modify NTFS permissions maximum, same time keep in mind grant full control perms to only build-in administrators group and system only
Also from share folder root, remove Creator owner group, this is main culprit
Because if this group is there, who has creating new folders, will become owner of that folder causing access problems to all

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thank you