I have a problem with Apache24 SSO (NTLM authentication) configuration. When I want to upload attachments that are on white list I get error message "Failed! The file you are trying to attach is empty, File won't be attached.".
Do you know is there some configuration on IE11? Because when I log in with Mozilla Firefox, Google Chrome or Edge I can upload attachment.
I have to use IE11 because it is enterprise environment and my customer demands use of that browser.