data/upload folder became unaccesible

[Espoiscool]

Hi, I hope somebody can help with this.
When I try to view any files that have been uploaded into Espo, I'm being asked for a username and password by my browser. This just started for no reason and it's a big problem. I have checked directory privacy isn't enabled on the folder and also removed my .htaccess to test and the problem still remains, when I open any page which has content in the /data/upload directory I'm always prompted for a username and password .... Any ideas ?
Thanks

[bandtank]

Have you tried clearing the app's cache, logging out, clearing cookies/cache in your browser, etc.?