I have read several tips from the forum but I could not get my issue work yet.
When I upload an image from an article, the upload works on "sites/default/files" but the thumbnails are not generated on "sites/default/files/styles/" and the Chrome console drop an 404 error.
Specific example
sites/default/files/myfileuploaded.jpg OK!
sites/default/files/styles/medium/public/ exists but 2020-03/myfileuploaded.jpg is NOT GENERATED!
sites/default/files/styles/large/ (IDEM "medium")
sites/default/files/styles/small/ (IDEM "medium")
What I've tested
1) sites/default/files and sites/default/files/styles/ permissions are identical.
2) Temporal path allow write for IIUSR, anyway in sites/default/files I can see uploaded files so that temporal would not be the real problem.
3) I know that in other forums recommend to add sites/default/files/styles/.htaccess file with "setHandler None" for files but I could not find how to do this in IIS and if it would apply to IIS
4) No errors in Drupal Status Report
5) No errors/warnings related in Recent log messages
My env
IIS 8.5
Windows Server 2018 R2
PHP 7.2.22
GD2 lib
Please any help would be very appreciated